For those interested, Dubro sells a ball link with the name something like 2-56 ball link for 4-40 threaded rod. You don't have to enlarge or re-tap any holes that way.

Also, for those using a Brison 3.2, you can cut a hole in the right side of the engine box and mount the throttle servo there with very short and very straight linkage. The servo arm may have to be inside the box. No big deal. You will likely have to install the throttle servo in the tail to offset the weight of the servo in the nose. Placing the ignition battery in the engine box and the flight battery on the servo tray and all balances at or near 3.5 inches on the 28% Extras.

There's some really nice looking work taking place in this thread guys.

WW2Ace,
I couldn't open the last pic in each line. What am I missing in that?