Did you use the SA drum brakes on your old MTB? I've been thinking of building a wet weather bike with drum hubs, and it would be an old steel mtb. I was planning on disc, but the more I hear about the squealing, the less attractive they are, plus you can't just throw them on an old frame. Are there any drawbacks on the drum brakes, other than weight (which I don't really consider to be a problem) and having to do a little more work to take off the wheel?