[mrbingley]

For those of you with the larger diameter tubing has any of you given consideration to the use of a bracket similar to that used by the "Zalman Flower" heatsink ?
This bracket could positioned very nicely to support your tubing, either use cable ties or adapt the end of the bracket to suit.
As far as I know you can purchase the bracket seperately, so shouldn't cost too much to try and see what the results are like.

Cheers
Chris.