This is annoying..

Another idea autozone had a rent a tool program that u pay upfront an then get ur money back do a compression test on it it will tell u how good ur too end condition is...

Its really easy to do an takes five minutes jus plug
The tool in the spark plug hole ( with correct adaptor & u may need to remove
Seat) turn switch to in kick intill the gauge
Doesn't raise any higher 10 kicks or so should get u there an boom that's ur compression