Carb heat slippage fix
The arm that hooks to the door on mine has two holes. Originally my cable was hooked to the hole closest to the pivot point. So, leverage from the cable pulling on the door was low, but leverage from the door pulling on the cable was high.
I moved it to the other hole to reverse that situation.
I had to replace the cable with a longer one because the total movement is significantly more that before. Also, the cable pulls out slightly past the last detent.
Now the carb heat will not slip back in, even at cruise speed. Opening and closing is easier than before.
At some point I might modify the arm to have a location just slightly closer to the pivot point, but for now its fine.