First I’m no gunsmith. But I’m pretty mechanically apt as I work on engines for a living for close to 30 years now. My model 65 is a bit slow in timing. I understand the hand is worn or ratchets worn. So I ordered an oversized hand. No problem stoning it to fit the window. Just took my time. I can see through the window which ratchets need filed and which edge. I do have an armorers manual. But instead of modifying my extractor I thought id just buy one to work with. My question is will 38 extractor fit and if not does it have to be for a recessed cylinder? Or should I just file the original? It carries up great now but the ratchets are just a tad too wide on 4 holes. I’d say around.001-.0015. Just enough to drag the hand. Thank you for any assistance.