IIRC, the ST-Owners group had a couple of sets of shims that they would send to members so they could do their own valve adjustments. If you used one or two, I think you replaced those and you just kept the shim set until the next member needed it.
Back to the '83 Silverwing. I remember well the day I decided that I needed to upgrade from it. It was in the early fall of '98 and I had been to Grand Junction and Montrose. I had gone primarily to see my son's band, The Flying Roscoes, open at the Olathe Sweet Corn Festival for Kansas (of "Dust in the Wind" fame). While I was there I decided it gave me a good opportunity to ride CO-93 between Crawford and Blue Mesa Dam. 93 is one of the best roads in a state with a lot of great roads. It's got elevation change, tight twisties, sweepers, and great views. And on a nice Sunday morning, it's got lots of motorcycles. I was really enjoying the ride, but kept getting passed by sport bikes, adventure bikes (not so many of those in '98), and sport-touring bikes, and meeting more of them going north. I picked up the pace a little bit and realized that the Silverwing didn't have the stiffest frame. Or the greatest brakes. Or the most powerful engine. It was just a tad slow compared to most other bikes on the road. After Blue Mesa, I was on US-50 eastbound and rode over Monarch Pass. I decided to stay on 50 to Penrose, east of Canon City.
As I went through Salida, I saw a couple on two mint-green BMW R1100RTs waiting to pull out. In about a mile they passed me. Five miles down the road they stopped for something and I passed them. In another mile, they passed me again. We played that game all the way to Colorado Springs. I'm guessing we passed each other at least 20 times. By the time we finally went our separate ways, I was burning with lust for an R1100RT. The next week, I had a hospital visit in Denver and after making that visit, went to a BMW dealer to look at an RT. This dealer, at that time, didn't have prices on his bikes. And he didn't pay any attention whatsoever to me. I have to admit that I didn't look like much -- the only motorcycle gear I had besides an old helmet was a leather leather jacket a friend had given me that had long fringe on the sleeves. I finally had to ask the guy what an RT cost and he finally looked at me and said, "You can't afford one." I said, "Well, just humor me...what does this one cost?" When he told me (seems like it was about $19 grand), I realized he was right. About ten minutes later, a kid (early 20s) who had just come in were looking at an R90, and, not knowing anything about R90s, I asked again, "What does this one cost?" and the dealer graciously replied, "You can't afford that either... but it's $9K." (I think that's what he said.) The kid and I wandered back over to a new R1200RT. The kid told me that he had just gotten his Masters degree and his dad was going to buy him an RT so they could ride together on two RTs. Then he pulled a signed blank check from his shirt pocket and showed it to me. This bike had some extras on it and was what he was looking for. He asked the friendly dealer, "How much?" and friendly dealer replied, "You can't afford one either." The kid and I left, me to ride my Silverwing back to Ft Morgan, the kid to go to the other, smaller dealer in Denver where, I'm sure, he bought an RT.
About six months after that I saw the first Kawasaki Concours I'd ever seen in Ft Morgan. I'd never heard of the Connie, but the next day, the Rider magazine I bought at Safeway had a long article about them. Within 3 weeks, I'd bought my first '99 Connie. A month or two after that I was in Denver for another hospital visit and went by that other, smaller BMW dealer to buy one of the little brass 90-degree tire valve extensions. The staff there couldn't have been nicer. Three of them went out to look at my new Connie and told me what a great bike it was. The let me sit on (and would have let me ride) a new RT. If I had ever been in the market for a BMW, guess where I would have gone?
I still like those early RTs, but I'm happy with my NT!