If it always want to turn right, you have to add left trim or 'build the trim in' by having the rudder deflected to the left a bit when the servos are centered.

Normally, you fly the plane, trim it for straight and level flight using the trim tabs on the Tx. then, when you land, you note the deflection of the surfaces, center the servos and readjust the pushrods so they have that amount of deflection as when you landed.

And yes, it is possible something is bent. You should be able to see it though. As for the control surfaces, eyeing them from the front, down the fuse, should give you a pretty good indication if they are straight.

The Slow Stick does want to pitch up a lot when power is applied. Sometimes this can be a good thing. When you get used to flying the plane, you'll naturally apply some down elevator when you apply full power if your intent was not to climb but to get some speed. It may seem like a challenge at first, but after you've been flying for a while, it will all come second nature.

If you want to get rid of that pitching up tendancy, you have to build yourself an insert that fits inside the front of the fuse that has a 3 degree down angle to it.