My 08 shifts great but lately when I shift into 5th, it seems like it's not in gear completely and then all of a sudden, it slams into gear and goes. Almost feels like the clutch slips for one breif second and then grabs. Took it to a shop and they told me the fluid needs to be changed because there was this stuff in the bottom of the resovior that looked like a milky white jelly substance. I completely cleaned the clutch system and replaced the fluid. The clutch seems smother but when it gets to 5th gear, there's the slip and grab again. Anybody ever have this issue with their Wing??