First off, if this was covered in a different thread and I missed it, I apologize. I have an 1851 Navy Colt revolver. The cylinder spins sometimes, other times it doesnt. Im getting a new hand spring and know that a streched body might be a problem since it is brass.The thing that leaves me thinking is that there are small groves worn next to the large ones on the cylinder. Is this a problem or normal wear and tear? Any help would be greatly appreciated.