Brassneck

Re-read your first post, and I totally missed the clutch slip point you made...sorry about that. But backfire on decel has me thinking...

As GLJ pointed out, it sounds like clutch slipping...and likely nothing to do with your carbs. Check the adjustment process (again in...

Anything is possible if the carbs aren't set up correctly...but I'm not sure what you mean by Revving high during hard...

A quick way to tell if you have an air leak is to get the bike running and then spray starter fluid around the intakes, and even around...

To me, it sounds like you have an air leak--likely around the carb boot, or perhaps the air/fuel mix screw is off a bit...but just a...