I had MVS installed on my site and ran into two problems.
The first was that if someone paid with paypal without a paypal account, I did not get an order process email and the order was not recorded on my site. I have been using the database to steal orders (by looking at their cart), but would prefer not to do that forever.
Second is that I cannot add a handling fee to UPS XML or DHL. If I add a handling fee in each of the modules, the handling fee is not added to the shipping cost. If I add a blanket handling fee to the specific vendor, the handling fee is added to all shipping methods except for UPS XML and DHL. How can I add a handling fee for UPS XML and DHL?