Wombat

I blew my head gasket. Engine overheated but only for a minute. I fitted a reconditioned head. Cam timing marks are properly aligned.

Recently fitted reconditioned cylinder head with VRS kit to 2000 1.8ltr 7a-fe corolla. Engine runs but pushes oil out rocker cover/cam seal (a and b in images) Cylinders 2 and 3 have only 60psi. 1 and 4 have 180psi. Piston rings??? Please advise possible causes and remedies.

I recently fitted a reconditioned head, complete with VRS kit to my 2000 1.8ltr (7A-fe) Corolla following a blown head gasket. The engine starts but forces oil out the rocker cover and/or cam seal at the timing gear end into the timing gear/belt housing (between a and b in images provided) Also, i have only 60 psi compression in cylinders 2 and 3. 1 and 4 have 180psi. What are likely causes? How do i correct these problems? Piston rings?? Please advise