It could be lean but usually it lean poops & acts up if it is .
Not no power & getting "to hot"
if you think its that, re-check for leaks, leakdown is the best way, you can try spraying it again, but not as accurate & clean carbs
I'd say rt sides not firing.
Cold= not firing and You said rt side hot af i assume you meant left? So ill say (cold)
Assuming your pipes not full of gas now-
1Check that rt (cold side) carb has fuel in it
2 swap plug wires & see if rt ( cold) gets hot & left cold.
3rd after putting back,
Pull choke on rt side ( cold side)& see if it gets hot with choke pulled.
Or if you can get fuel to the rt( cold) side intake
4th clean ( atleast rt) carb.
( for now)