Oil in crankcase of Polaris 2 cycle Liberty 500 XCSP
I have excessive 2 cycle oil in the crankcase of my 2005 Polaris XC SP 500 on flywheel side which is blocking the vacuum line that controls the fuel pump, thus no fuel is being pumped to the carbs. The sled ran fine last season and now has 8500 miles but has set in summer storage until now with a full tank of 2 cycle oil in the reservoir. The reservoir is now down about 20 ounces so this oil ended up in my crankcase over the summer. This motor has an oil line from the oil pump to the center crank bearing. While researching how this oil is getting in the crankcase, I found a thread reporting (for a different motor) that if the center seals begin leaking, that oil can drip into the crankcase. Is this also true for my 500 Liberty engine? Or is there another cause? What is necessary to fix this and, if I get the oil out of there, can I still run it as is?