Cory,

I've done a lot off sheeting in my many years of kit/scratch building. Here's what works well for me.

Apply the water/ammonia mix to the outside of the sheet only. As the mixture soaks into the wood, the wood will bend naturally on it's own. This elliminates a lot of the stress put on the piece when you do the final bending. Don't rush. I usually let the sheet dry in the warped configuration, and then re-wet for the final installation. If you rush, you might crack the wood sheeting. I only use yellow carpenter's glue. It soaks into the wood and allows time for positioning. Most of the glue is water and when it evaporates, the weight is almost nothing.

Clamping is a problem with straight pins unless you use a "plate" applied on top of the sheeting. I use a thin, small piece of balsa or card stock like a business card. This plate will allow the pressure from the pin to be distributed over an area much larger that the pin shaft and ensure a good bond to the sub structure.

I cut paper templates for the critical ares such as the tail cone, wing tip, etc. Then transfer the pattern to the sheet and cut before you wet it.

Regarding Windex. I use it and it works well. The only problem (other than the blue color) is that it will evaporate too quickly in warm weather.

Good luck.

Paul