Trying to contact customers services to see about buying the MPVI3 but can?t reach anyone, I?ve sent in a email with no reply. For the cost of your products, one would think we would be able to reach customer service more easily? I want to buy the MPVI3 and keep my MPVI2 but I haven?t found any info on the site if we are able to do so without turning in our MPVI2. Can we get an answer soon? Also, we see them for sell on Amazon and wanted to know if you guys support these from Amazon or only from HPtuners?