Here is the cylinder that others have said is correct. I have not purchased one. I have the tumblers separate so I will just swap the tumblers if the ledge gets rounded. The top of the tumbler is not the issue when they are up above the shear line, its the "ledge" that contacts the key. Grinding/leveling the top is not correcting the problem.







BTW there are 10 spaces with only 5 depths on our key. Usually the first 2 or 3 are the only ones that get worn because of the "sawing" action of the key near the beginning of the keyway. you can remove a tumbler from the rear (1,2,3,4,or 5 depth) and swap with one in the front that is worn with the same depth tumbler and leave out the one in the rear. Once you understand the depth system is pretty easy to cut a code key by eye. This is our code series 3501-6700.