Has anyone managed to get 2x HVR900H USB external DVB-T tuners working well together in Win7 MC RC, or preferably, RTM?

Both work fine individually and are also detected together on 'tv setup', but often have an initial scanning issue when both are installed. Even if they do get in a good channel scan and get all the freeview HD ones listed, they just don't seem to like working together trying to watch and record separate channels. (the UHF signal is good btw, no issues there)

I would have prefered an HVR2200 but space in the case is a bit tight atm, so I want to at least try and get these externals working first.

They both have the Hauppauge latest driver and I've used these links for testing so far (a quick scan of the Hauppauge forums offers little)
http://www.hack7mc.com/2009/09/clearing-guide-data-and-tuner-setup-from-windows-7-media-center.html
http://www.hack7mc.com/2009/06/track-down-tuner-trouble-with-recording-history.html
http://www.hack7mc.com/2009/06/setting-up-tuner-priority-per-channel.html

Am I deluded to think it'll be fixed in the Oct. retail release?