Any suggestions on whereabouts in Portland to get my 870 Express receiver drilled and tapped for a picatinny rail? I've called Allison & Carey and they were hesitant even though I advised them Remington does this on their Express Tactical line for a few years now and they were only aware of the cantilever rail that is on the barrel. They said they'd still do it but at an estimate of $125. Reading online most smiths charge $20/hole for this but this is in other states. Any info would be greatly appreciated!