What was the latest ROM Version available for the Kantronics KPC-3 (NOT Plus) TNC? Are there differences in the electronics' used or will any KPC-3 ROM work in any hardware? I recently purchased a small lot of TNCs. I have one KPC-3 w/V5.3 and two KPC-3 w/V6.0 marked on the ROMs. 73 -- Tim N9PUZ