priming the oil pump

I installed a mechanical oil pressure gauge and it is showing 60 plus pounds of pressure using the drill to prim it. Still no oil to driver side.

Re: turn the motor to 20* after top dead center just past #6 compression. The drivers side rockers should get oil.
How many inches is 20 degrees?

A friend wondered if maybe the head gasket was installed incorrectly. Is that possible?

Thanks!!