Hey Allan. How goes it down under? Hope the weather is cooperating in your winter.. we have had some nice weather and some, well, it has been getting pretty windy in the afternoon.

Anyway, I thought that the ball socket would twist in use which potentially would cause it to pop out. For this reason, I never tried them, and just stick with the good old clevis. Dubro makes some pretty nice heavy duty clevis's in both 2-56 and 4-40. They have a little clip on them that locks in the pivot pin so it will not pop out. They are both light and strong. I have them on most of my planes and have had ZERO problems with them. And, because they are 'threaded' the control rod screws into the clevis which allows for length adjustments of about a half inch or so, which, if built right, is more than enough room for adjustment.

But, as I said earlier, I stand corrected for those that use them. But, I like my Dubro's and will stick with them for control surfaces, and will limit the use of the ball sockets for throttle only.

Dick.