Hey guys i have a 01 legacy gt 2.5l sohc,

I pulled out my engine to replace the head gaskets and timing belt got all that done reinstalled the engine and now the crank wont spin, So i unbolted it from the transmission and as soon as I lossen the bolts on the passenger side of the trans is spins fine but when I tighten them back up the crank locks up, I have never seen this problem

I made sure everything lined up properly and did not notice any issues when bolting the the motor to the trans, any suggestions

Car is an auto