Hi Danny,
What speed & RPM are you at in 5th when it doesn't run so well?
When was the carb last cleaned?
When were the plugs last replaced?
What octane fuel are you using?
Are you using a fuel filter?
When was the air filter last serviced?
Do you have adjustable push rods?
If so when were they last adjusted?
Is the leak between the head & cylinder or the cylinder & cases?
What color is the fluid when on your finger?
Are you using up oil unexpectedly?
Do you have a compression tester?
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