Well, some do take longer but they are the exception rather than the rule. Since not a single scale of yours has formed bulblets after 8 to 10 weeks indicates something wrong somewhere. How do the scales look now, are they still nice and solid? If they are still nice and solid, cut the old end off so you have a new surface and re-incubate with barely moist straight peat moss in sealed bags and see what happens. Incubate in the dark at temperatures of 65 to 70'F preferable, and absolutely no higher than 75'F, ever!
