You might try S&W Customer service. The part number will be 0707801.

Check also to make sure your model 37 doesn't have excessive end shake.....over .002". If it does, you might try repairing the end shake first, to see if that will help with the carry up issue.

If S&W doesn't have any OS hands, measure the width of the throat area at the top of the hand that is in the gun. I may have one I could send that would be .001"-.002" over what you currently have, which may solve the problem. Standard width J series hands are typically .073" - .075". Oversized OEM's are usually in the .078" - .080" range.

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Ret. LE, FA Instr, S&W Armorer