ICC contractor exam — NEC article questions were harder than any study material I used

I sat for the Illinois Commerce Commission electrical contractor exam last week and barely missed passing — scored a 69% and the cutoff is 70%. I've been doing electrical work for 11 years and the NEC code application questions hit differently on the real exam than anything I prepped with. The study guides I used covered Articles 100 through 250 pretty well but the exam pulled from Articles 300 and 400 more than I expected.

I was doing about 1 hour of review per day for 6 weeks leading up, which in hindsight wasn't enough. The load calculation problems specifically took longer than I budgeted and I ended up rushing the last 15 questions. If I'd given myself 10 more minutes on that section the score would have been different.

For my retake I'm going back to basics on wiring methods and working through an ICC practice test set every other day to build pattern recognition for the code-lookup style questions. Has anyone used the JADE Learning prep modules for the Illinois-specific content? I want to know if their question difficulty actually matches the real exam before I pay for a subscription.