Hello Board, I've now run into this issue 2 times. I replace the oil and oil filter, let the oil drain out for about 3hr's until all drips stop whip everything down then fill it back up per spec's in user manual with a measuring cup, run check and everything is spot on right at the line. Take the bike out everything is fine no problems until I go 60 - 120mph quickly then bang oils in the filter and I have to replace it. First time I figured it was me replaced the air filter cleaned everything out and wrote it off as a user head space error..... but 2 times same issue ggggrrrrrr this just doesn't seem right. I cook all the time and never have a problem measuring stuff out to the exact requirements :dontknow: anyone have any ideas whatâ€™s going on or if there is another level that might work. Next time Iâ€™ll leave out 100ml there is so much more in life I'd rather spend 44$ on then an air filter.