I have run into a problem and need your experience and advise. I'm building Kraut's UltraSpadStick and ended up having to using a wider cutout than design in the center of elevators.
As the pics show I need an angled install of the servo, (Two added 1/8" ply shims under the back screws line it up with angled control horn.)
I have the ball links as pictured (4-40 size) which I bought for throttle linkage at carb.

?'s 1) What is the preferred/best method of handling this type of problem?
2) It seems that a ball link mounted to the servo horn would be a neat solution. I have no idea of the proper way or if it is even advisable.
3) Is there a problem with the control horn being off of 90 degrees to the hinge line?

Advise, links all help will be appreciated. I have read a lot of threads in last year but just now getting into scratch/SPAD building