just took head off as gasket gone to find it only 137.5m so i belive it can not be skimmed again i got a crack in block across a bolt hole and i can move pistons about 2 mm side to side . i really am startin to get fed up with car as i only had it four manths and something all ways going wrong is this piston movement normal and i haeard long studding block can get round teh crack. also around the bores is wire rung does this need re doin or can i just slad an uprated gasket on top off groves