low compression ( help!!!)

[hevnland]

ok i just changed the head gasket on my 95 - g20 and i believe the timing is aligned right, but i still have low compression on cyl. 1-3 and #4 reads twice as much ... 1-3 pressure is 25 lbs. psi-- and # 4 is 50 lbs. psi...i know i torqued the head down right, would missed timing effect compression? if not what else could it be?Thanks

[RED_DET]

First off, why did you changed the head gasket? What problems did you have before the head gasket replacement? Low compression is normally not caused by timing.