Lot's of good suggestions above.
Do you NEED that much servo arm travel? Cut down the travel (EPA, ATV) so you don't have the binding, and maybe move the clevis on the opposite end to a hole closer to the control surface if you need to. Or a longer servo arm plus less travel.

Do a "Z" bend instead of the "L".

Turn the rod around so the "L" is at the horn (but more of a pain to adjust at the servo).