Archived from groups: rec.games.video.arcade.collecting (More info?
Somebody is selling refurbished 3" Betson/Imperial TB's for $25 each
over at arcadecontrols.com in the buy/sell/trade forum (currently on
second page), which I think are drop-in replacements for Happ's. Maybe
he has some blue or red ones... Even if you have to buy the balls,
though, pretty good deal.
Also, from what I understand (I don't know Oscar or anything, this is
based what I read on the forums) Oscar controls is down temporarily due
to real-world sydrome.