Have T-rex 600 electric heli and can't seem to get Align night blades to track. The blades balance fine. The blades that are currently on the heli track perfectly. When I put the night blades on, tracking is off by at leat 1 inch. I have adjusted the ball links back and forth with no apparent change to the tracking. The blades just won't track and I don't know why. Been flying Heli's off and on for almost 20 years. Never seen anything like this. Can anyone give some advice? I have already exchanged one pair for another new pair at my local hobby shop. No difference. So I have tried two different sets of Align night blades and neither would track.

Terry