Motor issues - gas out the exhaust

mechanicScott

XS650 Addict
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New issue that has just come up with my xs650.

It has a rephrased crank and cam from Hugh - did about 8 months ago.

I went to ride today and noticed it was really down on power, then parked it and noticed the right side exhaust was wet with fuel.

Possibly stuck open float needle? Or just too rich??
Also did a leak down and both cylinders are leaking so will probably rebuilt the top end w/ 700 cc pistons.

Has anyone ever used oversized valves on any of their motors??

I am running a single carb off a modern 4stroke motocross bike with a custom 1-2 intake

Was running great for about 500 miles, then a small clutch issue.. Now this.
 
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