Bushed lifter bores

I had "supposedly" the best machine shop around here, do my 440/505 when I built it. I asked him to bush the lifter bores, he said they couldn`t do it!
Shady dell speed shop can do a lot of specialty machining that other shops cannot do. He removes the cam bearings and has fixturing that locates off the cam bores in the block. Of course I have not run the motor yet and I have noted that I cannot get my roller lifters in and out with the heads on because of the increased height of the lifter bushings.