@bobkmertz Gerstlauer have definitely built trains for Schwarzkopf coasters. I think Zierer had some history there too.
I don’t think Jetline is going anywhere, and most of the other major Schwarzkopfs in Europe already have new trains, or are very well looked after (e.g. the ones on the German fair circuit).
I agree they’re usually good rides, and I’m concerned that some parks may remove their classic Schwarzkopfs, rather than pay to refurbish them, should that become necessary.
@bobkmertz @will6789 Zierer definitely built Lisebergbanan, so it wouldn’t surprise me that there are others. I know Lisebergbanan was Anton’s design (and by all accounts, one of his favourite coasters), he just worked with Zierer to build rides once his own company had folded.
Like you, I lose track of who did what in the aftermath, and am never sure who is providing what services these days.