a beautiful boat should sail forever.
There are three basic mast track deformations. 1) An up and down bend 2)a sideways bend 3) a twist.
After guessing frustratingly a fundamental principle of success emerged.
" SET BOUNDARIES TO THE CORRECTIVE DEFORMATION YOU CAN INFLICT"
As an example, here we have an up and down bend, supported on 1 inch blocks three " hole intervals" away, on each side, from the location of our corrective bend. Gently push the center down with your palm. The most you can do is push the center down one inch, i.e. the maximum deformation you can do. One of the advantages of the FUNDAMENTAL PRINCIPLE is that now you are able to quantify your efforts, which means that as you find out what works it is repeatable!!!!
It is somewhat of an art, however, to feel the point where you have actually inflicted some permanent deformation to correct the problem.
Varying the distance of the blocks from the point of deformation varies the concentration of force.