Sold a sample TZ to a nice lady the other day, and I told her I'd install the third magnet for her. I know third magnet kits come with only one opto pair, but because it's a sample, there's still wiring for another opto. This pair goes for monitoring the little lane between the clock plastic and the slot plastic. I know the original sample ROM had no use for it, but does the 9.4H? Any reason I should install this pair?

Hey, a click sound counts. I thought it literally did nothing. Might as well stick it in. What's the second autofire opto? There doesn't seem to be room on the switch matrix for another switch.

Oh, silly me, missed that one. Cool. I figured it was just commented out of code. In fact, it seems a bad practice to leave useless stuff in. The kind of thing you'd get scolded for in programming 101. I guess they were beyond the days of having to squeeze everything into a tiny tiny PROM, but 4 meg is still enough for things to need to be erased for space purposes.

It's so easy to forget that back in the 90's, pinball makers REMOVED stuff before release. Now with Stern's updates, we're lucky if every intended feature is programmed in. Don't think they ever fixed some of those meaningless lamps.