Not much. But I will... provided I ride more.

As an earlier poster stated: nowhere to go but up! At my level, it is most assuredly NOT about the bike.
This year so far: measly <600 miles, about like this: 60% endurance rides (tortoise-like, @ 11-12mph, generally in mild/moderate hills and Oklahoma winds), 20% intervals, 20% noodling. Not surprisingly, my only improvement has been an increase in endurance. I now feel pretty good the first 30 miles or so; that was not true in April.
My plan: long (tour) ride coming up, for which I am alarmingly undertrained. Assuming I survive that and do not (1) die, or (2) throw my bike off a bridge in frustration, after the tour I'll switch my focus to intervals & tempo work.
So, ask again later.