Yamaha G2 Blow By

[fixedblade]

I've read and searched on this site for the cause of blow by into air box.

No. 1 ~ Overfilled with oil, not the case with mine.
N0. 2 ~ Lifted cart, possibility yes (6" lift)
N0. 3 ~ Governor adjusted for high rpm, not the case with mine.
No. 4 ~ Worn out motor, not the case fresh engine rebuild, blew oil prior to rebuild as well.
No. 5 ~ Return oil tube plugged fro top of head to crank case, checked not plugged or kinked.

My blow by seems very heavy. I've read about bypassing the air box and installing a catch can for the oil. I would rather not do this. Would really like to figure out why. The only reasoning is the 6" lift.

Any suggestions??

Thanks!