Hey guys/girls new to the forum I purchased a 05 450r a couple months ago it was a pain to start, I’ve had several bikes in my life and this one by far is the worst to start. Valves are all in spec not sure if it’s carb related or not. I thought it had low compression as I could turn it over by hand I’ve tore it apart and was gonna do a piston and decided since it all seems to still be OEM piston and crank I’ll do a full rebuild. It’s had the two intake valves changed at sometime because their kibble white, it has a aftermarket cam with ( HCDF NO:16 ) engraved on it. Anybody have any idea what cam this is? And wich valves would be the most reliable to put back in? Stainless or OEM steel? I don’t race just trail ride