Hi, I hope you don't mind if I jump in with a couple questions, I've been reading this thread for a while and have learned alot as I have simular questions. I have been learning to hover with my cp pro and was considering doing something to mod the tail. There are alot of ways to modify the tail and after reading all the different forums I think the GWS DD tail seems the most popular. I was thinking of doing a partial mod. Can you put a 9T pinion on the Gws motor and use the stock housing with the stock gear/tail rotor setup? Do you think it will it get decent performance this way? I was just thinking it is nice when you have an occassional tail strike that the tail rotor pops off and does not break everytime. I have also been trimming my tail rotor 5/16", do you loose holding power as a result because it seems to hold with adjusting the the proportional pot abit? One last thought from another post, does the tail fin effect the tail rotor from doing it job? Thanks Rick