It could be that you think it rekicks because of the trough switch, but it could be unrelated to it. This could be the problem (this is the same advice I posted for another post recently - I've seen it happen numerous times):
Check the ball kicker for "mushrooming" and then take a file to it. When the kicker blade gets shroomed, it can catch the plastic switch arm and close the outhole switch as the kicker arm returns back to it's resting position. That of course re-energizes the O relay which will re-fire the kicker.

Yeah, my point is moot if the game is designed to do this. I'm really surprised Gottlieb even did this. Yes, it might have saved a couple of bucks, but not worth it if it makes your product look like it has a mechanical flaw right from the factory. At least it didn't take them too long to see the error of their design.

I don't see the benefit. A "normal" Gottlieb game will re-kick the ball for eternity until it successfully gets over the trough incline.