I think that you just adjust it so that the cross-corner weights are equal, not for a specific number of pounds, but I've only read about it.
I've only found the Intercomp system for $999-$1049; there doesn't appear to be a big competitive market in the automotive scale business. There are some mechanical models in the $250 range, but I'd rather have the electronic ones. There are some used sets on ebay, but automotive scales appear to hold their value better than iPhones; they are all expensive. Given the limited use that these will be put to, I'd be fine with saving a few $ on the Proform set.
The custodian of the scales can be anyone, as long as that person has someone at their house most days. I travel a lot, but there's usually someone at the house that could let you get them. Single people who travel a lot might not be a good choice. Or we could just leave them with whoever last used them; that way the person that uses them the most will generally already have them.
If we're all in the Raleigh area, then we just need to give the OP the $ and let him order them. I can drop off the money as soon as tomorrow if we want to pull the trigger on this. I'm ready to corner-balance the LeMons car for optimum crapbox handling!
I can also get a set of race ramps. I know a guy that sells them and I think that he's got a set that I can pick up for cheap.
Additionally I can set up a calendar on a forum that I run (
www.carolinahondas.com ) so we can keep track of who's got them and who needs them for contact and scheduling purposes.