Yep, similar experience here too. They repaired a friend mine's Avatar MPU (sound issue) - for a fair price and in a couple of weeks. They replaced an LED board on my out-of-warranty Star Trek Premium, for free and they didn't have me go out of my way with any annoying and needless troubleshooting silliness, either. I sent a detailed email and got a similarly detailed response. Quick resolution.
By contrast, My company (used to) pay Rackspace the price of one of these pins per month for a couple (small) servers in a leased hosting arrangement and by contrast to get something fixed with server hardware, took 2-hour phone calls and a pile of paperwork. Many hoops to jump through.
In fact, both Stern and JJP have both been good to me on support, thus far with pins. I'm sure being months behind on production, supply chain issues, quality issues is probably not helping their support capacity right now for GB. I hope that the 'program' Gary mentioned to KPG is going to be a populated playfield swap for affected games. I wonder if the 'program' and expenses related have some weird derivative financial implications through bonding and insurance or something?
At any rate, not to beat a dead horse but wanted to be fair and mention Stern has done right by me, so far.