I'm thinking that's not a bad idea. But no need to NOT do it just because they are already fitted. I have both sizes of lids and switch back and forth between them. Went to Bike Bandit and got a second set of latch plates and screws and rigged a different lanyard setup so that switching back and forth does not involve removing/installing screws into the plastic. 10 minute job to swap them.I find I am using the NT more and more for running about making various trips (what a great bike it is) and am about to fit the larger pannier lids (I got them as part of the purchase deal running in the UK, but haven't got round to fitting them yet). I find I'm carrying more stuff around and might as well have the extra capacity available for if I need it. Having finally taken a close look, that mounting point for the latches really does look flimsy. Has anyone tried filling around the area with epoxy resin (or similar) prior to fitting the lids - as an attempt to add a little extra strength to a bad design? I thought it might be worth a try to repair them BEFORE they break.
Bob
The larger panniers are useful but somehow disturb the tao of the bike, so I only mount them when I need the extra space.