Hey guys thank you for reading this and giving me some hints and knowledge on how to fix this problem in advance. So I've been having a lot of problems with my motor I've done a carb kit on both carbs, new fuel primer bulb, new head gasket on the left side, new plugs well like 6 months old, 1 coil, etc... A bunch more... So today at the lake I missed with the cables for the carbs and made sure they where in sync, and tried to get a better fuel/air mixture and adjusted my throttle cable a little bit and I got my motor to idle better then what it did cause it kept dying. But Idles better now and I went to take off and it sounded around 3,000 rpm gutting my tach stopped working, but would not come close to plain and I'm completely stumped as to what it could be I was adjusting and playing with it for 3 and a half hours at the lake today. Any advice would be very much appreciated and thank you for your time and knowledge.