360 questions

hemied - I am not sure how much $ you have into the current block, but stopping now will surely be cheaper than going forward especially if you are not happy now, making it more expensive doesn't usually make it better, as you already know.

The experience you shared with the your shop may be typical, but I abhor that kind of customer service; as if we have no where else to go. Luckily I have many shops to choose from in the metro LA area but I only use 1 or 2 places for most things, not hot rod huts, but real engine machine shops, and I prefer the local mom and pops to the mega shops. I usually pre-negotiate ALL machine work with the understanding that if something goes sideways, they call me before going deeper in without my approval - just like I do with MY clients - because I don't like spending other folks $ if they are not on board only to have an upset customer when the bill comes.

Anyhow, that's my $0.02, and since 360 blocks are garden-variety you should probably just go get a fresher one and save yourself some shop time (read $) and piece of mind.