If you are having a problem with your 1996 Waveventure and cannot run it without the choke pulled up some. You may need to do a carb rebuild with upgraded parts. I called yamaha becuase I have 2 ski's, a 97 and a 96. The carb setup is different between the two. Yamaha actually had a warranty upgrade for this until 2003, but stopped sending the kit out. Fortunatly, you can still buy the parts. If anyone would like me to e-mail them the tech brief that explains the problem, the parts and has directions to do the upgrade, please let me know. I would attach it to the post, but I am not sure how.