RE: slop between clevis and control horn
Fill the hole in plastic with some baking soda, a drop of CA on both sides, .......... cure time .... redrill with proper sized bit. The CA sure seems to stick to the plastic nozzles of bottle and the bicarbonate of soda makes a hard filler. Took a closer look at part and believe Post #6 would be better.
I can identify with the need to have home fixes. Also have a some of those horns GP brand and they have tight fit to all clevis in inventory . Had to order just to get an up close look.