I picked up an older Model 36 3" awhile back. I've taken it to the range and it functions without a hitch. The only thing I've noticed, and I have lot of revolvers and a lot of experience with revolvers, is that when I open the cylinder fully, the lip of the cartridges touch the little ridge on the bottom of the frame and the cylinder won't turn freely. This happens both with spent cartridges and fresh ammunition. I've cleaned under the star and I as said, other than this one characteristic, the revolver functions well. No problems reloading, etc. I just wonder what causes this and should I get it fixed and what would that entail? Thanks in advance for any help.