The consensus is that the last 2 weeks of veg is the fastest growth spurt on autos, week 4,5,6 depending on the strain. Try waiting the extra 10 days before the flush next time, then flush them with plain water and make a solution with your first flower feed and top them off, durring the flush with that and see what happens. Most autos will still stretch a bit even after flower nutes. Technically, the NITROGEN numbers are about the same on the Grow/Bloom on the sensi line, so it would make sense for there to be some stretch in veg.
TaNg ran the Sensi bloom through a whole grow, start to finish and said essentially if you crunch the numbers on the nitrogen on that grow, they were getting more N and were some big, stellar plants.
Flushing is a stress, but they can take a bit of stress, if you dont flush between veg and flower, you could eventually get lockout, due to salt buildup in the last few weeks of flower, which is when you dont want any deficiencies at that stage in the grow. That will overall shrink your yield.:thumbs: