Thanks guys for the help, I also found the THK bearings and... I'm stunned at the prices. I had no idea they would be this much. I thought they were just a hard nylon rub that trapped the rail. I was wrong. First time! Anyway, I'm re-thinking the design a little, I'm looking for sturdy and CHEAP. That's my style. (Unless you ask my wife, she'll tell you she never met anyone who can spend money like me!)
He is no fool who gives what he cannot keep to gain what he cannot lose
If you cannot stand behind our troops, (and I understand, no judgement here), then please stand in front of them, remember, they're willing to stand in front of you!