Yikes.
That's definitely something that should be mentioned, and "minty mint" was clearly misleading.
I'm not aware of such issues with RZ playfields.
Unfortunate, as it was his AMH that I bought last year and it went well.
On a positive note, the mods there are sought after. Particularly the spine mod, as the inquiries for it have been about 3x what I produced before discontinuing them early (only about 30 spines out there [over 100 each of the mausoleum and gas set for comparison]). I've been offered double+ on some discontinued mods, but I always stick to my word once discontinued.