Well, I can't pull the table from the location...they are both almost CONSTANTLY in use.

Xodara, you don't understand the level of blockage.....imagine the hand grease/oils, and spilled food/soda from a hundred+ folks a day easily, and then imagine that getting all over the pucks, the paddles, the table....
and then imagine that being worked in with dust and dirt to the point its black, and that being forced down into the airholes by pucks and paddles and hands.
Windex only cleans the table so much, and that's only once a week.
You let that build over time, and you have what I dealt with, which is where probably 40-60% of the air holes are at least partially blocked....
so that should give you an idea of whats going on.
New AH playfields are 1000$ bucks a pop...so just dropping in a new one, is NOT cost effective. Normally I would have had a dremel tool for the job, but we are moving warehouses, and the entire tech room is packed in boxes, and waiting to move over....so no go there either.
Twisted...I can imagine the DDR/TC foot stuff.....you would think all the sand would grind those metal pieces clean...but nope. They are bad enough when filled with dust and coke...but sand too....that would suck.