Ryan, sorry, I almost missed your spinner question. The 5 1/2 inch spinner is from Dave brown. I have owned both Tru-Turn and Dave Brown spinners, they both are good quality parts, but need balancing. They use different methods to build their spinners but the Dave brown is a better price. I am about to buy another Dave Brown for my new James Bates P-51 B, almost finished and ready to fly. Its dimensions are almost identical to The H9 model, but 'I' BUILT everything but the glass fuselage. I didn't like some of the wood that came with the woodcutter's kit, so I replaced it with better stuff.