Hi xeos, I bend the mainshaft but the spindle has never been changed. I aggree the head looks weak but I have only had to replace one blade grip and a paddle control frame on it so far not bad I think as I have been warned about using plasti-blades and doing more damage(knock on wood). Flybars are another thing I have replaced a few of and three sets of stock blades before I got the plasti ones. I know what you mean about parts drawers as I tend to overdue things and have one of every part and a few of the common ones at this rate I could have bought a second cp pro. The only other conversion I think of doing on this heli is the tx as all the others I would like to do will take away money from my trex if I get a nicer heli and the tx I could use for both. The truth of the matter is this last wipeout has bummed me out a bit so I won't even work on my heli today maybe I'll get some yardwork done. My emotions are on a roller coaster lately with my love/hate relationship with my cp pro, for every three steps forward I seem to take one or more back and alas the confidence and sense of accomplishment I had flying this morning lasted two packs now I wonder will I ever learn to fly this thing. Rick