Originally Posted by WizardOfBoz

First, it would seem that whomever did the press fit originally for your BB didn't use anti-sieze, and you got galling. The next step, which you took, would be to remove burrs and assess the bearing seat. Ideally, when one does this, one only abrades the galled sections. A machinist would have used an abrasive stone, like a whetstone, to "stone" down any burrs that were proud of the surface. With the precise application of abrasion, one doesn't enlarge or bell-mouth the hole and you retain "press fit" tolerances and not "slip fit".

It seems like you applied the abrasive all-round, but the fact that you still have some press-fit left in the cup gives one hope. There is a specific product by Loctite for bearing retention that should allow your setup to work nicely. Looks like you are all over it: it is their Bearing Retention Compound 609. This will allow you to install the bearings and use the bike, but will make it difficult to remove the bearing again later on. Since you have a metal frame, you can use heat to break the bond if you need to do that later, though.

If you have a bearing installation tool (or a piece of threaded rod with two nuts and some washers), you probably will be ok with what you have and compound 609. Note that 609 is an either/or with anti-seize: you use one or the other, not both. And if you do use 609, you should clean the metal surfaces first. I'd use some mineral spirits, followed by a cotton ball that was damp with acetone (careful with acetone: it eats paint).

If the LBS installed the BB bearing originally, they should make good on any repairs - metal to metal friction fits of any kind should at least get grease, if not proper antiseize.