reception problems

hello all, i bought a general lee from radioactive radios back in july 2007, got it in and put it in the truck and it worked great. a couple of months ago i switched trucks to a newer one and switched the radio out and now it's not receiving worth a flip, anything over a mile and i can't pull it out. the only thing that changed was instead of putting the antenna on the mirror bracket, i put it on the slider bar behind the sleeper because the new truck has daylight doors on it (no vent windows). i've checked the swr's and am getting less than 1.1, here's the setup general lee radio superwhackpacked, wilson 2000 antenna, gray 150 linear, rk 56 mike. i spoke with michael from radioactive on 12-22-07 and was trying to tell him that i was running with a buddy of mine who has a stryker 440 and we met another guy we know going the other direction within 1 minute i couldn't hear him anymore but my buddy talked to him almost 10 minutes and could still hear him. but as soon as i got stryker out of my mouth he interrupted me and got very indignant about it and started trashing the stryker. i kind of wanted to tell him that a stock cobra 29 would probably receive better than what i've got, but i didn't want to make him any madder than what he was. he told me to email them about it then they would email me back with instructions to send the radio back to him. what a hassle, anyone got any better ideas? thanks in advance for any help.

 

too late, i bought the general lee from radioactive back in july, it was replacing a cobra 29 that i've had for 10 or 12 years that started humming sometimes when i would key up. i was told that the transmit transformer was going bad but the guy acted like he didn't want to fix it, so i bought the general lee from radioactive, thought they were a pretty good outfit.

 

the coax is new, bought it when i bought the radio from radioactive, and it ain't cheap when you buy it from them. the only thing was when i switched trucks and put the antenna on the slider bar behind the sleeper i didn't have quite enough coax so i added a 9 foot piece with a connector. don't know if that had anything to do with it or not, just seems like if it was an antenna or coax problem it would show up on the swr check. i have checked for ground and it is grounded according to my ohmmeter. thanks for the suggestions, keep em coming.

 

yeah i already thought about these things and figured it would be ok, the truck is a mack vision with a midroof. the entire steel whip of the wilson antenna is above the sleeper and cab, everything below the whip including the coil is below the sleeper. i pull a tanker so there shouldn't be any blockage much behind me, what do you guys think? oh, by the way merry christmas to everyone and thanks for all the advice.