For first issue with the Today's Special, sounds like your switch needs adjusting. I have had many a switch that was not gaped correctly that caused similar behavior.

The second issue may be proper. From the rules sheet: "If the EAT lanes have been lit the white arrow lights at the base of each ramp will light to spot 1 bank of targets for each successful right or left ramp shot."

Third issue sounds like coil issue with that diverter. Validate that there is no break in the winding and that everything looks nice and solid at the lugs.

Cheers,
Seth (former Diner owner)

Oh, and you may get more responses if you ask a Moderator to move this to a better sub group (some people never browse the front page):
https://pinside.com/pinball/forum/forum/tech-alpha-numeric-games

I have never actually needed to, but I think you can put a request in via this: https://pinside.com/pinball/forum/forum/moderator-feedback