Me too...might have been what triggered that response ( brain is funny like that ). I'll tell you...I've heard that this DD setup is the cat's meow...when it works (???). Best bet for success...use the stock propeller from the kit (reversed on the shaft), use the CP STOCK GEARBOX and adjust CG as needed. I think it'll work out, but I won't find out till the two motors arrive. I'll go ahead and break a motor in for an hour when I get them. All you're really doing breaking them in is seating in the brushes and polishing the armature. Remember the old slot cars (N or O scale). Used to have to fuss with brushes alot and keep the armature clean for top performance because you didn't win races with a dirty motor or bad brushes.