Bonding ribs, horizontal stab

[Flyboy66]

I have only been to the antique tractor section of Harbor Freight. I didn’t even know they had an aircraft section! More clamps are on the list now. I really like the idea of bonding the stiffeners first. I am in the process of doing ribs first than adding stiffeners for the stab. The elevator will be done differently.

On the stiffener subject; are you applying adhesive to both sides, or just one? And do you set up the stiffeners to contact the tubing or does it end just prior to the tubing so that you are bonding on,y the rib to the tubing?