I may try one for the wifes CRV, can't get rid of a misfire code and they are known to have valve seat problems. I don't really need to know what the percentage is as much as varience.
I would say you have a burnt exhaust valve for sure. If you drive it that way the next thing to go will be your catalytic convertor from all the unburnt fuel going out the exhaust. Just finished doing a valve job on my daughters crv it had a burnt exhaust valve. The valve lash is .006 to .008 on the exhaust and before tearing it down I couldn't get a .003 feeler gauge between them.
And I used my shop made leak down tester to find the problem cylinder
