Well that stuffs me. I don't have any Dark coated bolts

But got that one anyway. Its the blocks to the OTA that's causing me grief atm. I substituted a the two centre ones with bolts I already had and have an allen key for. I'll take one of the supplied ones down to super cheap tomorrow and see if i can pick up the allen key I need to tighten up the two outer block bolts properly. You can only get them so tight using a phillips head screwdriver