Talking about rudder left. Too much left rudder always gives me a spiral down. Either have to reduce it or more up elevator.
Actually this is why I use tail tilt to provide most of the left turn. Rudder is far more effective at high speed then during the low speed of the glide, thus it is best to just have enough to roll the glider into the left glide turn during the climb. It needs to be enough to start the left glide - but no more.
I have approx. 1 deg offset of the whole rudder for left turn. However this is a starting point and I often need to reduce this by adding a bit of right rudder, when trimming the climb.
It's not a good idea to add more elevator to overcome too much left rudder as this will only hurt your climb - causing it to arc towards a loop.
When you have a glider climbing close to the vertical - it means that the pitch stability is low and it will not generally tolerate getting it's nose down and speeding up.
Tail tilt I have found has next to no effect on the climb but is effective on the glide. How much you will need depends on the geometry of the model - it's tail size ( more accurately it's tail volume).
These comments are all based on trimming the CLG for a right/left "S" type pattern.
I agree with John's(Hepcat) comments re sanding in wash out. I have never actually used wash out.
John has a much broader experience than I do and most of my CLG and HLG experience is with different sizes of the one design. I also don't use tip weight much although I do have a very slight offset of the wing on the fuselage - I doubt whether it does much though.
John