A recent aquisition left me with approx. 200' of SVRR aluminum flex track. I'll be running track power outdoors. I'm fully aware of the problems associated with running track power with aluminum rail. That's why I know I need rail clamps. My question is what material should my rail clamps be made out of to work with aluminum rail? I've heard that brass and aluminum don't mix well. Also, if possible, I'd like a clamp that would work with both aluminum rail and SS rail. As money allows in the future, I'd ultimately like to replace the alum. with SS rail. Thanks for your input.