I could have swore that the 170 is the same pattern as the 150/200, it just uses 6mm bolts instead of 5mm. My zdz uses the 5mm bolt, same pattern as the 150/200. I had a 3 blade 29 x 12 EVO that was drilled for the 6mm bolts and I glued in some hollow CF tube and drilled it for the 5mm bolts. It has worked great for the last 5 years. No issues at all.
Oh man, That's a bummer. I'd try and sell it to someone used, and get a new prop. Otherwise, Id rough sand the inside of the holes with like 40grit, then tape off the bottom. Get some carbon fibers and chop them up about the width of the hole, mix with slow curing epoxy and pack them tightly in the holes squishing out as much epoxy as I could. Considering these props are laminated carbon, I have no idea what the core is comprised of. it's almost like a light phenolic of some sort. By creating a bunch of holes in the surface I think you are effetely weakening the tensile strength of the laminate skin. I just don't think it's worth the effort or risk personally.