I can't comment on your firm, but triple plating where they polish the copper rather than polishing the tanks steel wafer thin is very important.
I've now had three tanks rechromed and all done by the same company in NZ.
Its a labour intensive process and not cheap but you can end up with a thing of beauty.
There are some very good tape pin lining products that are easy to apply and wont come off.
My A75 tank came home today having travelled over 500km each way to a reputable plater