my husband has been having problems with his slo stick plane veering to the left.He has changed the rudder, rudder throw, rudder is perfectly straight. going crazy. He has to fight to keep it straight. Please help !

Is it only under power or does it also turn right on a glide? If it's only under power then you can correct it by pointing the motor about 3 degrees down and right (this can be done by many creative methods) If it also does it under glide then the problem is in the setup of the plane, check the main wing to make sure it's not cocked one way or the other.

My guess would be a warped wing. Check each half on a flat surface. Should be square all the way around. Gentle application of heat from blow dryer or heat gun (CAREFULLY!!!) will allow the wing to be manipulated back to square.

Bratnewton

Check the above as mentioned. One other thing, one of my SS's had a twisted aluminum fuselage and if you look from the front of the plane holding it out from you the wing and tail should be parellel.
Like this

---------------------------------------------------- wing
---------------------- Tail

If they are not parrellel twisting the fuselage will generally kink it and break it. You can try shimming the tail mount with a popsicle stick or the like, or get a new fuselage, they are available.


Wow for some reason when I post it aligns right by default. That tail line should be center to the wing sorry.