On those tank slappers. I felt the start of that twice when I first got the bike and was running a 100 wide tire up front. I've since gone with a 110 wide tire up front and for the last 15,000 plus miles have not even felt any hint of that situation. Years ago I read something about a 110 size tire gives you just a little more contact patch, which keeps the front away from tank slappers. So far it's held true for me. or I've just been lucky. I did change the rear shocks with a set of Hagon, just a cheap set, 200 bucks. They could have helped..... then 7.5 weight oil in the front with some cheap e bay pre load adjusters. So far so good, or at least a little better. Closing in on 19,000 miles with the bike these days. It's been a bike that pisses me off at times, but I'm hanging in there.