I have a 1988 RM250 which has been completely rebuilt using a wiesco piston (new crank bearings, connecting rod, piston rings etc). With the OEM factory piston I had a squish angle clearance of about 0.035". With the Weisco piston I now have a clearance of 0.017", which I belive is too little. I am going to remachine the head and need to know what the new squish clearance should be for this bike. As a side note, head is closest at the intake side of the head (0.017") but larger ar the exhaust side (0.022"). Should I worry about equalising this? Thanks Alex