On the topic of DropTargets not resetting:
https://pinside.com/pinball/forum/topic/guardians-of-the-galaxy-owners-thread/page/40#post-4382324
It is sadly a well known old issue that appears on many Stern machines.
SB No165 from 2006 regarding #world-poker-tour addresses this.
It makes me wonder why Stern never have made a proper fix /redesign of the drop targets.
+12 years and counting....
http://www.sternpinball.com/upload/downloads/sb165.pdf
cheers
/mima