Occasionally, the cam (black plastic handle) on a Loveland lever can crack with use (more info here). If this happens to your Dusty Strings harp, you don't have to replace the whole lever; you can order just a replacement cam and switch it out for the broken one. In most cases, the process is simple and requires only a 1/4" wrench, although some levers in the upper range of the harp require an extra step and another tool. There is an instruction sheet here, and tools are available here.
Note: If you have a non-Dusty Strings harp, we do not recommend ordering cams from us. We have historically used a different length of handle than most other harp makers, so it is unlikely that ours will match the rest of the levers on your harp.
About ordering cams:
Note: We no longer have any size 0 in the older style of cam. If you need to replace one, you can either use the newer style in that one spot, or you can replace all your cams with the new style so that they'll match.