I would go back to the first shop and have them try again. The great part about the sidas system is the footbed can be remoulded quite a few times before they shrink too much. I would start by chatting to the fitters about the issues you are worried about and let them try again. If they are a decent shop they hopefully offer some kind of garentee so all though you messe with them hopefully they will still try to help you out. Trim to fits are all basically the same and can either help or make things worse. Don't mess with them go custom if you possibly can.