Comp Cams 6500 / damper fitment

I have a SBC (Dart SHP) engine that I’m putting a Comp Cams 6500 camshaft belt drive on. I am having problems getting my Pro Products 90002 damper to fit. The damper outer ring hits the thick washer and bolts on the camshaft pulley. I had the washer turned down to clear the damper, but now the damper ring hits the six camshaft pulley bolts. If I mill the bolts down to fit, there will only be about .210” of bolt to get a nut onto.

I called Pro Products and they say all their dampers have the same outer ring offset.

I can’t use shims to move the damper further out because there’s only 1.050” of snout mating with the damper now.

I called Comp Cams and they said “There is nothing abnormal about our belt drive that will require a special damper, any everything should work.”

I just need a damper (preferably 8”) whose outer ring is about .200” further forward of the block face.  Any ideas?