"Opened them up a bit"
"I think they are a bit too loose"
You need feeler gauges and set those suckers to factory spec.
Anywhere between the lower and upper limit as stated in the service manual.
(s.m. available on this website)
Just shoot for the middle of the range stated in the manual.
Remember intake and exhaust have different specs.
Once they are properly set according to proper feeler gauges then any rough running
problem will be elsewhere. Carb, compression, electrical... yadda yadda.
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