2000__GSR

There has got be someone out there with the same setup I poured 4QTS of oil into the pan and it doesn't pour out the oil return bung at the top when I goto 4.5QTS it pours out. My dipstick was trimmed back like Z10 told me and I was told I could run 4.5QTS with the turbo and it won't back up sure enough you can only use 4QTS but my oil dipstick can't tell me because that level is lower than what the stick can tell me. Anyone out there with this same oil pan please help me!!!