G'day H, great to hear you have saved the finish and now back on track. Probably feels a bit like Ground Hog Day but if you continue in the same way as you did on your Fretless Bass you will bring home a ripper finished product.
My DT dramas began about this time last year and went on all through the summer as the South East Qld humidity seemed to cause all sorts of dramas. I think it probably works best in fairly dry, warm, low humidity or fairly stable climatic conditions. Quite often if you only have one or 2 days spare per week to work on your axe those perfect conditions may have already passed whilst you were at work.
The stains and intensifier are awesome but it can get tricky after 3rd intensifier and at the start of the top coats. I wonder if using the DT neck finish would be the better way to go as it is supposed to cure harder?