Have three xc Yfz450r identical builds, and change oil after every race. Was in process of changing oil and have jls see thru covers on all bikes, and noticed after putting 1.8 quarts in that it would not stay in the left side of the case and register on dip stick. After that I added more oil to 2.5 quarts (which I know is way to much) and still won’t register. When I start it appears to have oil flow just not filling that case side. Also I’m getting the case pressurized as I checked breather box hose. Just need some options, could it be the oil pump? Or clogged port somewhere?