Help with Mirror Cell

I am embarking on a rebuild of a 13.1" Coulter Blue Tube to a truss tube style. This is my first project of this scale and I have a question or two about the mirror cell.

The Mirror is 13.1" and 1.125 thick. I have decided to go with a 9 point cell, mostly because that mimics the support pattern of the original tailgate design. Do you think that 9 points is the correct configuration for this mirror?

I am patterning my cell loosely after the Kriege design and have come to understand it's basics from reviewing web sites outlining various projects. One thing that I can't seem to visualize is how one attaches the support triangles to the collimation screws in a manner that keeps them free floating. Can amyone provide any insight?

Is mirror attachment best accomplished with silicone? I have used silicone on a small downward looking Binocular scanner and it seems to work well, but the mirror is much smaller and lighter (and less expensive) so I ask your guidance.

Lastly, I am probably missing an obvious easy answer, but in visualizing the process of attaching the mirror to the cell, How do you manage to make sure the mirror is centered. I wouldn't want to make a mistake in this step.

Thank you for reading this and any insights you can offer.

Rod

A 6 point will work fine. Mine is at

http://www.starastronomy.org/TelescopeMaking/MirrorCell/index.html

Thanks for all of the responses. I have placed an order for Kriege's book and will review that closely before moving forward.

I may still take you up on those offers of help as I move forward.

Thanks again.