you gotta relise..

Everyone says, Oil rings, Rebuild, ect ect.. but there not always correct.

first off- Oil rings will spit a hudge cloud of smoke out the zorst everytime off boost.
second - oil beathers are SHIT on RST standard ones. even more so when the engine is not standard.
3rd - if you use a crhome rocker cover then you'll have no joy of keeping the oil cap down. as the rubber has nothing to grib onto. if you wanna keep the cover in chrome just sand down the oil lip and make sure its ruff.

alot of them pop off. i thought mine had gone when the cap poped off, oil pressure was fine, check the compresstion that was fine, removed the head and sump and then went onto removing the pistons and crank and all was fine.