In that case, and if the connector is plastic, could you flip the linkage in a way that the connector goes to the carb's arm and the z-bend to the servo arm?
In that way the radio interference would be solved.
I have that layout in my models, working fine for years.

If you find a mechanical way of keeping those bolts from coming out the crankcase-carb body, you could fly this weekend.
That is the only function of the thread, which should be sealed somehow, in order to avoid air leaks.
The function of the bolts is to keep the carb body pressing down on the o-ring.

Something provisional, like wrapping vinyl tape around the heads of the bolts and holding the wrapping with two plastic tie-wraps, would work for a weekend.
No pretty but practical.