Interestingly enough I just noticed that in the comments section Pavel responded to a question about the weight jumps and this is what he had to say:
Small weight jumps are good for beginners, than things start breaking down. You end up spending too many workouts near your RM and you only have so many before you crash and drop off the peak. And you end up spinning your wheels too long in the beginning of the cycle. 2-5% 1RM jumps are optimal. If you want to learn more, read the “Very Progressive Overload” article in my Power to the People Monthly (www.PowertothePeopleMonthly.com).
The first part of that statement parallels my experience pretty much exactly.