I have been running a 4.5 Francis with SWR readings of 1.2, 1.2, and 1.3 0n ch's 1, 20, and 40 respectively. Since I don't have the sense to leave well enough alone, I decided to try my Wilson 2000 on the same mount. When keying on ch 20, the SWR will reach around 2.1 and immediately drop to...