Set up issues

I'm in a prostar using factory antenna wires to a mirror mount. Running a cobra 29 Ltd classic and a 3' firestick II antenna with an adjustable tip. I've got the tip as low as it will go and still getting SWR reading of just below 2 on ch 1 and well above 3 on channel 40. Everything I've read says to lower antenna but out do it lower the antenna? Doesn't appear this antenna was meant to be physically cut. Any advise would help.

 

Yes, all of the stuff looks factory set up, total figure out how to get into the mirror housing to get to mount and coax. I'm pretty sure the mount is rusty as it has been left exposed for a month or so that I know of.

And thanks for the advice

 

I've thought of doing that. Running a dual antenna set up off each mirror. New mounts and wires. Only thing stopping me is I don't know how to run the wires. Not to good at that short of thing. Plus this prostar only has a loose strap to secure my cb n the slot for it. Can't even pull the strap tight cause the removable shelf above the cb compartment I can't remove. The company thought it would be a great idea to mount some kind of small computer to it with short wires so the shelf is no longer removable.

 

Don't have a meter to check it. When I get back to the terminal I was planing on borrowing a latter from the shop and removing the mirror cover and check the mount and everything to make sure it's tight and look for rust and what not.