hi everybody im graduating from my blade cp soon for a 450SA. ill be buying a DX7 next week and from there ill be putting stuff on layaway until shes ready. so i guess i have some research time. i was wondering if the servos that come with the DX7 are going to work np on the trex. and while im here,are there different trex 450SAs?? i heard horizon hobbys has a shorter boom or something like that.