What does it do to a heli as far as hovering when your tracking is way off

vibrations (which cause unnecessary wear on your components) and erratic flight.

It is a heli max mx 400 and I have heard that the blades are crap and some times can not be tracked so,I was thinking about buying a set of align blade for the trex but they are longer what pinion should I chage to in order to run them and can I even do this

I think you can use the align 305mm blades for that.

See this link. http://www.fxaeromodels.com/product_...oducts_id=2204

I did a quick search and found that, I'm not reccomending you buy from them (not saying don't either, I have never heard of the company).

I've had my tracking be out to the point where it makes the heli tough to control and sounds bad, can't fly that way for any length of time without causing problems.