The only bad spot I could hear is a click or pop when Arthur reaches into the chest containing the Holy Hand Grenade.

I checked the same spot on the Criterion and it's there, so it's a soundtrack flaw, not a disc one. It's not there on the 1999 DVD, so either they used a different source or did some cleanup.

The fact the soundtrack has a little hiss is a good sign it wasn't fiddled with.

I need to review the Japanese soundtrack, and we should be good to go. PM me with your address when you get the chance.