Ew12j4 -3fz. Help

Hello municipality. Question. Crankshaft ot- Einlassnoke ot- Auslassnocke ot. Timing belts tightened according to specification and still block the motor. The cylinder button has been overhauled and planned. Valves have been regrinded and the whole head has been cleaned. Who knows what that can be. I have gone through about 50 times all the settings, all the ot points have been locked with thorn. Yes, the 1 and 4 cylinders are not at the top of the top of the barrel bushings at ot painting, which are about 1.5 cm below the top of the barrel bushings. I ch think that’s then xy grad before ot. Eye-shining the problem lies at the outlet side since inlet side at not quite 180 degrees rehung the pistons 2-3 stand up and the inlet valves are closed. Who can provide ideas where that can lie. Thanks to all the snow in advance.