heliman23

hi all need help just built my rjx head i have a trex 500 esp and all i have done is removed the flybar head and now i am going to put fly barless head on do i need to change the main shaft at all it does fit on to the shaft i have put it in the top hole if that is right but not sure if i need the fly barless shaft or will the original one do i have taken the two long rods of the fly bar head and it will fit but the hole which goes over the ball joint is tight the one where the blades go the swash plate one seams ok does move but have not got a clue weather that is ok any measure ments will be use full as well any information on this would be great thanks