After my Amplifier SWR increases anytime (just a few tenths)the SWR will not decrease by itself . Cycling the amplifier on and off resets SWR back to 1.2 or less and it stays put but never decreases . My question is why does the sampling always stay at the high and not ever go down. The HF-Tuner does vary up ?and down a bit. I’m feeling no love with this SWR meter.