dee22 wrote:...Selling and rebuying a gun fixes the problem most of the time (kind of expensive depending on the gun)...
Hmmm, interesting. I don't know how to fix that, but I do have a workaround for the losing money problem. You can go to the old Vegastrike store (mouse down in the lower right-hand corner of the repair shop screen) and sell your radar, then exit the Vegastrike store and sell the radar again in the repair shop. Buy a new radar and you should be money ahead. Depending on the value of the radar that should recoup some or all of the credits lost on trading in your old guns for new ones.
In my case, I sell 4 Tachyon cannon and then sell my B&S Omni twice (once in each shop), then I buy 4 Tachyon cannon and a new B&S Omni. That leaves me about 15,000 cr ahead, so I sell and re-buy my jump drive 3 times and that is about break-even. I haven't tried selling other stuff in the old store, so maybe you could double-sell something less expensive than the Omni and not have to worry about making money on the deal.