As we all know DUY are legendary for being tough to get ahold of. Digi says PT 8 requires version 4 of DUY plugs. Anybody know how to upgrade? Somewhere buried in the depths of their website, there was a page where you could enter your serial number and see what upgrades were available. At least, that's what the page claimed....every time I checked, it said the service was "temporarily offline for maintenance." I emailed them in February, and then again yesterday. No response yet.....