well it sounds like a intresting problem. I think if you try something like what I stated it will work for you.

but you didn't say anything about 28 driven objects.. is that like the total number of SDK's you have set up ?? becouse from what you stated in the first post was 2 drivers, 1 driven. The teck I posted about can be modifyed to do like 1 driver 2 driven.. or more.