Hey Dave,
(taking this out of the Dust Boot thread, continuing the discussion from PWNCNC V8 Update)
Then you might be interested to know that, besides the other day I reported you that Ghislain discovered that there can be connection problems with breakout board adapter, now recently another user reported the problem (which persisted) was with the DB-25 connector soldered into Onefinity Controller Mainboard, problem was resolved by resoldering the solder joints on DB-25 connector pins on Mainboard .