Slow to come down to idle when warm / hot

[Easy Rider]

Originally Posted by oneyunguy

I took the engine apart and had the cylinder rebored and put new piston / rings in, all new gaskets, the GOOD STUFF, since I owned it.

Ah HA! Now for the REST of the story! :roll:

That opens up more possibilities.
Like head gasket leak.......
Checked the valve clearance lately??
If everygthing else checks out, the rebuild might have changed the displacement JUST enough that you need some carb mods to get the mixture right again.