So I bought a Fishman Matrix Infinty VT for my Martin 000-28EC. Would like to do the install myself (saving the cash is good, and there's not all that much to it). But I am at a decision point on tooling. StewMac sells a nice reamer that mounts in the drill. It is probably the ideal tool for the job. But it's a hundred bucks, and I'll likely only use it once. The guitar has an end pin currently, so there is already a smaller hole. Are there other ways to do this without spending so much for a one use tool? Looking mostly for first hand experience, but of course other opinions are always welcome. A standard ½" drill bit is an option. As is a hand reamer, and also a step drill. Anyone done this with any of these (or other methods) and want to share their experiences, good or bad?