[RodB]

Pat, the reason for the tuner ground straps is two fold. One is to provide a solid ground for the tuner frame. Mechanical connections just don't provide enough reliable electrical connection for an RF path. So, they do prevent microphonics from occurring. The second is that, now you have a tuner frame mechanically isolated from the chassis, the braid is plenty flexible to contend with vibration, especially aircraft, ships, tanks, etc. There is a third that hasn't been proven; many designers have, back in the day, invested in companies that manufactured high wattage soldering irons.

IMHO 3 straps is overkill. One should be sufficient.