Finally decided to learn how to adjust the valves. And it wasnt that hard. It was just tricky getting a screwdriver in there and everytime I thought I had it right, I tightened the nut only to find out that while tightening it, the screw got a bit tight, and it did not allow the proper shim to get through. I tried again, and again and finaly got it right. I havent fired her up, im waiting on a rear tire and a sparkplug now.