My third one has been good a while now since I fill the tank full at the end of each ride/day. I don't know if the ethanol is the reason or what it is with those strips. Maybe some 'ring-around-the-tank' forms some sort of muck on them? Luckily, BMW dropped that design in their newer bikes and went back to floats.
Oh. Overheard the mechanics talking about some switch gear on a GS model. Turns out that that bike had no ABS unit on it as the switchgear was different. Seems BMW only made a 3 month run of non-ABS units and one mechanic was seriously offering the owner some cash to get rid of that bike as he wanted it. He didn't want to deal with the expensive ABS units and some with the more expensive pumpers. Just thought it was an interesting FYI for someone when the thread about expensive $2,000 items being a reason not to buy some bike. The GS and RT Boxer models have depreciated far less (about $1,000 less) than the more expensive GT models too which seems odd, or the GT was really a dog. My GT is worth about $6,000 to $9,000 now (trade vs. private) on KBB. If it eats some $2,800 ABS pumper unit it might end up in the salvage yard.