what am i missing here? trying to track the mx 400 pro...was working ok the other day, now blue blade will be low....lengthen the blue blade linkage, then red blade will be low, lenthgen that blade linkage and the blue is low again!!!

This is only out of track when in idle up as well. please help.

(the blades are balanced)

I would start off by taking both linkages off and making sure they are equal. Have you checked CG on blades?. Are you using stock blades I have heard some say they could not get them to track. I installed a new set of stock last week, they balanced and CG was good and they made the Heli wobble like crazy. Old blades back on and smooth again. Try an old set and see what happens.

You can also check the flybar (moves smoothly, balanced, &c), feathering shaft and grip spacing, o-rings for wear/damage, and pitch control links for general condition as well as length dtacmed mentioned above.