I think you just had a bad RS experience. I know some try to resell the broken ones thinking the customer doesn't know what they are talking about. (Take note I did say some, not all. I had to repair a few when I was an employee to make the customers happy.) But the whole idea is that your problem should not of happened. I've been in retail and manufacturing a long time and a new one delivered str8 from the factory should have been shipped to your house. (At lease I whould have done that.) Continuing on, most people have to understand that there are several factors which can alter your product (several mentioned in several threads across all forums. Quality control, distrubution, support, and aftermarket products. It seems like the 1st 3 were neglicted. Which all of us are seem to have felt. Personally I would have checked to 1st compnet the Main PCB and used a thicker clad of copper. But anywho glad you like your mini Z, they are hobby class, not RS class. They didn't call em XMods for nothing.