Do you have a microscope to check the trichs?
Also, leaving the plant in total darkness the last day or so, is very questionable. Some say it works, others say it does not. Its really up to you, most people dont, but maybe you should test it out and see what happens? I have read from some seedbanks, that they reccomend the last week in total darkness, seems like a bit of an overkill, but never know till I try I guess.