Hi, New to TT and I have a question for everyone.I have a 2001 wr250 and the carb. had an issue with the float valve seat. Long story short, the carb. is no longer usable with the float valve pulled out of it (Yamaha does not mak a replacement float valve seat for it (Ya I know I should have checked that before I messed it up). I was wondering if a carb. off a 2002 wr250 will work on a 2001 wr250? I found one on e-bay and it is substantially cheaper than an aftermarket carb. OR Could I just use the bottom part of the 2002 carb, on the top part of the 2001 carb. They seem to be the same carb, but Yamaha says they have different part numbers and said they might night be interchangable. Has anyone had any experience (working that is) with these two being able to be incterchangable?