Well, tribe, it turned out that my last week's rant was for nothing.
Over the weekend I updated V's tires and put latex tubes. 25mm Michelin Power Comp in the front and 28 Conti GP 4000s II in the back. The AeroTi is also with Conti's and latex tubes, so that made them more equal in terms of rolling.
Today's Climb club the V totally vindicated itself. I got 16 PRs and most important - over the long hill segment I shaved off another 2 minutes over last week's Aero time. This already puts my PR in front of some of my DF buddies' who ride bikes half of the V's weight.
https://www.strava.com/activities/1137593147
My PR today is 6 minutes better than last year. That is about 20% - pretty significant improvement.
Next goal may turn out to be even heftier - shed a few pounds off my butt.