I have almost all the parts for this rocket gathered up. I just need a few small items. I bought all the tubes, couplers and none cones from RDS because I liked the price and their products are a littler sturdier than LOC/Precision’s parts. It took a while to get the stuff so plan on a several weeks to receive items if you order from them. I ended up ordering one fin each for the booster and the sustainer so I would get the right dimensions. I did make my fins a little thicker as I plan on using this rocket with EX motors that simulate to over 35,000 feet at speeds over mach 2.1. I also made all my own centering rings to custom fit the slightly bigger body tubing.