Hello, I am a new CBer and am trying to get my rig tuned. I have the Uniden Bearcat 980 with a 5’ Firestick antenna. I have spent about 1.5 hours trying to tune the antenna tip with the Bearcats built in SWR meter. I have screwed the antenna tip up and down all the way about two times. I turn it about a 1/4 to 1/2 turn and check the meter. I have gotten the SWR meter down to about 1.9 on channel 40 and about 3.0 on channel 1. I just can’t seem to get all the way down to 1.5. Any tips?