Leroy, our resident "Tubie" is 2x6spd. He doesn't post anywhere near as much as he used to, but if you do a search of his posts, you will find lots of info regarding tubes. You may even want to try and PM him.

Shawn

Epic 80/600 + M3's + M3 Algonquins + M2 Computer + EP125
I think I'm developing an addiction.