So i was shimming my 07 crf450 today and noticed that the exhaust were in spec right side was .25mm and left side was .30mm. the intake were out of spec at .10mm. so i took it apart and shimmed them. now the intake are in spec at .15mm each but the rocker arm has no clearance now. I was wondering what could have caused this because I didnt touch any exhaust shims.