sorry guys but that was a false estimation of the real damage.....
the real problem was that when i bought the new wossner piston it came with the wrong oil rings. they had a total 3.5mm of thickness while the groove had 4mm. so the 0.5mm of play caused the freaking smoke.
i put an extra oil ring to fill the gap(by a 95mm piston made for xt 600) and now have done more than 200km with no smoking AT ALL
the real problem was that when i bought the new wossner piston it came with the wrong oil rings. they had a total 3.5mm of thickness while the groove had 4mm. so the 0.5mm of play caused the freaking smoke.
i put an extra oil ring to fill the gap(by a 95mm piston made for xt 600) and now have done more than 200km with no smoking AT ALL
