Just got a Mark III 22/45. Field stripped and thoroughly cleaned and oiled. When I replace mainspring everything lines up, however, when I complete the process the bolt will not pull back. There is also no tension when I press the mainspring back into handle, again, everything is lined up and tilted to make sure hammer assembly freefloating piece is lined up with the mainspring. When I release the mainspring to redo the bolt will release and pull back. I have stripped and reassembled several times with the same result. Please help and thank you in advance!