VMS 7506 touring

Hi All

just wondering if anyone has had any trouble lately with the VMS 7506 models. more specifically, frequently loss of satellite reception and poor FM radio reception.

I purchased one in March and immediately after install found these problems. VMS offered a couple of explanations which I dont really buy, basically the poor radio reception was due to an incompatibility between the antenna and VMS unit and that to rectify i'd have to spend even more money and upgrade to a 'Hi Gain' antenna. I'd never had the issue with the stock radio, not sure if its something common in digital radios???

the GPS reception issue really bugs me because the few times i do have reception, it puts me about 3 streets over from where i'm actually driving. VMS sent me a chip to reprogram the unit and a new GPS antenna to try. havent got around to dismantling the dash to try the new antenna yet but the re-program had no effect. they tried to tell me that the loss was due to lack of satellites over the area, i dont buy that because ive been using $600 garmin for the last 5+ years and never had such an issue.

has anyone out there experienced any of these types of issues or anyone in the know who could confirm what i'm being told is possible because at the minute im finding it hard to grasp that a unit worth nearly $3k could operate so poorly....

thanks in advance for the help,

Jackson