I had two problems with mine, here's the first that was resolved with a digital cluster from you know who:
And then there was also an incorrect sending unit which I replaced with one from CSC. On the left is the "fuel sensor" I purchased from CSC and on the right is the one that came with my Hawk. The one that came with my Hawk wasn't even bent correctly. The bend you see is what I did prior to getting the one from CSC, and wouldn't you know it, my bend almost matches CSC's. On the stock sending unit, I also corrected the bend that angles the float away from the center of the tank because it would hit the ∩ and get stuck. CSC's didn't need any adjustments to any bends.
The gasket that came with the CSC one is 1000x better than the friggin O-ring that is stock with the Hawk. The O-ring is a real PITA to get properly lined up with the tank on it's side (with some gas still in it).
http://www.cscmotorcycles.com/TT250-...-p/zt8-113.htm