Just going to throw some ideas out there:
Are 6 & 8 wires running parallel to each other for any distance?
Something wonky with the Digital box.
Maybe a bit too much timing at 2500, try it 32 at 3000 or 3500.
Go through everything on the carb. Check each bleed and e-hole has been drilled and there's no trash in any of the wells etc.
(unfortunately QC issues are common enough to make this a consideration; if tapatalks crappy servers are working, look in here for examples reported racingfuelsystems.myfunforum.org -)
Here's one: Q-850 metering block - racingfuelsystems.myfunforum.org
