I am in the process of putting my 04 raptor 660 together with a full top end rebuild and a new clutch , when removing the crankcase cover gasket I put a cut in the small circular seal for what I believe is the oil check valve on the right crankcase , will this cause problems like “the engine will not allow oil to stay in the reservoir” as I’ve seen many in here complaining they cannot get oil to stay in there reservoir it just fills the tranny until it’s blows off !! How would you change this seal in general or would this mean a new case ?? also i have went thru to blow out all lines/filters with compressed air/solvent and added a new oil pump ,this is the last base I’ve need to touch in my journey ! Any help is appreciated