CH Throttle issue in LDS 767 ONLY, not in FS9 generally

Can somebody out there help me with this?I run FS9 with a large array of hardware including the CH Throttle Quadrant USB which works beautifully well on props and jets of every size and shape. Except for the LDS 767-300 where I get a great surge of excess N1 after the 80 knot THR HOLD mark. This has never been a significant issue for me in the many months I've had the LDS and I am baffled and irritated by it.When I advance the throttle levers manually to 60% or so and click the N1 button for t/o power, all is fine up to 80 knots. At 80 knots, however, when THR HOLD activates, N1 then starts to shoot wildly over the pre-set FMS limit and hits the max possible, unbalancing the takeoff procedure completely with assymetric thrust and or massive excess N1 on both engines. This happens because the thrust levers have to be firewalled prior to 80 knots in order to work with this add-on--it's a well-known issue to those who have CH equipment. I posted on the LDS forum about this in the past 24 hours and got some nice advice from one of the LDS gurus, but no joy in repairing this strange and annoying glitch that has sprung from nowhere in recent days. The only reliable way for me to depart in the LDS is to hit F3 to 60 or 70% and then hit the N1 button, leaving the CH thrust levers alone completey. An alternative is to advance the CH levers to 60%, hit N1, and then stow the levers back at the detent removing them from influencing takeoff power.I use FSUIPC to calibrate the throttle and calibration is a snap. The quadrant works beautifully with PMDG NG and 747-400 and all MSFS props and jets too. In sum, no issues with it at all on any other a/c except for the beloved LDS.Anybody have any ideas or suggestions what I might try to fix this?Sorry to go on, just wanted to explain it as clearly as I can. Thanks for reading and thanks for any posts.JS