Thanks for all the sage advice guys and it is appreciated. The pull system will be finished tomorrow. I only posted pics of the parts I'd made so far. I'll get another unit for the driver with an automatic system. When the rep came to see me I had already rigged a pipe system to go through both firewalls and one for inside. He said the ID of the pipe was too small (8mm) and that I should use 15mm minimum. I never asked about the propellant and he never said anything so I figured it was all good. I learned a big lesson here. As soon as you guys started asking about where the "powder" was going I knew I'd screwed the pooch.
