Thanks for the suggestion, the front servo seems to be working fine along with the other two. With both the boom and main motor disconnected, they seem to operate with out any glitches but hook them (motors) both up, and the chopper has a mind of its own. Standing as close as possible to the chopper when hovering I can see uncommanded movements of the front servo.
If all three work in unison to hover then I could only ascertain that the control unit can possibly be bad.
One item that is interesting is at full throttle up, the pitch lessons, com paired to 3/4 throttle, non interfered with where the pitch trim lever is positioned.