Ive been a little short on cash and I used the 1 inch plastic armes that came with the servo and the clevices that Tom put in his hardware kit They have been fine not sure how many flights that I have on the plane but 5 gal+ fuel has been burnt up as well as a lot of sky. Now im a beginner at the 3D stuff and ive maxed out the throw's Im going to get on these arms I get just a tad over 40 degrees with this setup. Dont use the ball links on the plastic armes Im told they will twist and break that would be a bad thing. Maybee next month ill get the bigger arms.