As long as you can get 40 or 50 rounds through it, a tight gap is WONDERFUL because it increases your velocity!
I have a .002" gap on my old Charter Arms Undercover and it'll just barely do 50 rounds if the ammo is particularly clean. I would NOT have it any other way. A gap down near .002 or .003 can be the equivelent of shooting .38Spl ammo from a 1" longer barrel than what you have. It could easily mean the difference between your .38Spl/+P hollowpoints expanding, or not.
When carried, or stored as bedside defense like it is right this second, I have two speedloaders available plus what's in it. I am quite confident it'll shoot those with no dragging. That's all I care about.
If you MUST open up the gap on any revolver, I would strongly recommend doing it yourself, VERY slowly, by using a small knife-sharpening hand stone of as fine a grit as possible applied gently and evenly to the back of the barrel face. Send it to the factory, and it could come back as a .006 or some such crap...still "in spec", but not what I'd call "max efficiency" - which you NEED on any small light snubby!
Ain't no such thing as a "bad gun due to a tight gap" - at worst, all it is is a wonderful opportunity to set it up perfectly.