i'm curious as to when you guys with dry sump motors check your oil. i've read check it after its been running so it doesn't leak past the check valve into the crankcase and you get a truer reading. i tried this and i'm reading rather low. almost a qt. it wasn't low a few weeks ago and it doesn't leak. so i don't want to over fill it. where is the check valve on my cb750 anyway? in the oil tank or the hose?