My TZ and FamilyGuy are ready to be put on route, both WPC and SAM system in my experience have been super reliable at home for past 4years. Like BigB said just repair it right the first time and you’ll be fine.

“frames per stop” is a manufacturer term(Brunswick/AMF).

Being a 82-70mechanic we do keep a record of calls aka stops but it’s nearly impossible to also keep a record of balls/frames thrown. Also many/most calls aka stops for a well maintained bowling center are not due to machine failure.. But instead due to “off spots” and “respots”- which naturally come no matter what.

Totally get it, different centers use different terms. Both head mechanics st each house I’ve worked under felt it’s not accurate and just keeping track of stops was more than efficient. And I agree.

Anything is possible but it’s nearly impossible to be accurate enough to measure FPS and have any credibility. Too many factors including lineage, number of lanes, are we counting practice?(10min before each league) usually on strike cycle. Respots and offspots? are calls that need to be immediately addressed and halt play even though it’s not a machine error. Hence, FPS being a manufacturing term because it’s in a controlled environment and it helps them sell you the next model because it does 5000fps compared to the 3500fps model from 10years ago.

To answer your other question- I highly doubt pinball operators keep a record of a ball getting stuck or a coin jamming etc.

I assume most good operators will fix the issue as soon as it arises and/or might make a mental note of something they need to adjust later. Seems silly to mark a log of a ball getting stuck or a coin jamming- unless they are unavailable/away- possibly an employee would make a list for the Op. Only thing I can see keeping a record of would be spare parts/parts order for a large route.