i have a pretty new fa100 with about 4-5 gallons ran threw and just recently lost comp. the engine was properly broke in. it justt started losing compression when i installed a cline regulator to preasurize the fuel tank. the prop i'm swinging is a 16*4 apc on 15% wildcat with 18%oil. rpms were about 8,900

now i havent adjusted the valves yet but that shouldnt do anything with comp. right? just performance

the engine is mounted inverted, and with the cline controller it never seemed richen up like before, but the exhaust oil never seemed burnt or have any matallic particles when adjusted recentlly with the cline

the engine seems to have more comp on one stroke than the other

any help please before i start taking the engine apart