I have a Kadet and have had the SAME problem. This is how I fiexed it. I junked the original pushrods and went with Gold-N-Rod push-rods/tubes. After that I realized that I was still getting the bind, so I rehinged the surface (elevator, like yours.) After that I only had minimal bend, so I moved the rod to where it was as linear with the servo as possible (no curves.) All fixed!

All in all, the main reason why I was bending the original pushrod and causing the servo to work very very hard was I USED TOO MUCH CA ON THE SIG EASY HINGES! That in turn caused the elevator to be hard to move even by hand.

ALSO, by making your control surfaces as easy to move as possbile, you SAVE BATTERY POWER!

Hope this helps.