bought a raptor 30 with a fp-r127df receiver and i have a rd6000 super transmitter. when i turn the TX on all the servos go crazy then stop, the controls only work when im practically on top of the unit, or they just do their own thing. when i am more than 6 feet away the controls do not work. i was told the ppr setting is what i want for this receiver. could it be the crystals i put in? do i need certain ones? i used the crystals from my axe cp...from what i have read these are single conversion crystals,,,what will putting single crystals into a dual conversion receiver do? thanks