probably a question for Lynn or a someone that's using a custom check, but has any work been done on printing the basic journal info (G/L acct and amount) for a check on the 2nd part of the stub which we keep.

Not really practical.  What about a check making partial payments of multiple vouchers each of which was split to 10 different GL accounts?  Or paying PO invoices where each PO had many lines of different parts of different classes posting to different accounts?  It's not that simple.