Hello, I noticed that I have 6 SWR bars that is over 2:1 I did TUNE and I read 1.6 In my Powermaster SWR I read 1.23 Why the difference, at least between the 1.6 I read in my K3 display and the bars in the meter of the K3 that show +2 of SWR? Thanks Jorge CX6VM/CW5W K3 #4077