I paired a 1200-1300 gram 2007 female last season and got 5 good eggs from here. Healthy as a horse, very active climber, but a dedicated mouser. She got up to 1600 grams before ovulation, was back down to 1350 gram right before laying, and dropped all way down to 900 grams after laying. Kind of alarming! But she's back up to 1500 grams this year, and I feel 4 huge follicles in there.
I also paired a 1300-1400 gram 2008 female last season, saw lots of locks, but got zilch. I think the younger snake simply wasn't ready.
Do people give females a year off now and then? I think maybe I should give that 2007 a break next season.