So the law of untended consequences strikes again.
I got the shorter chain stay installed. A couple of minor easily corrected issues, but the kicker is that I keep bumping the inner side of my right knee on the front brake. I am using Shimano Ultegra. I think the solution is to get a center pull brake that is compatible with the Di2 brifters. Has anyone done this on a V20 and can point me to what brand/model to use?
The amazing thing is that as soon as I finished, I did a 49 mile ride with 4500 ft of climbing on Kinomap, and I did not need to adjust either the RD or the FD.
I knew that going to the shorter chain stay would would raise the height of the handle bars. Using basic geometry, figured out how much, and decided it should not be a problem. The good news, it is easier to get on and off. The bad news, it does interfere with my forward visibility more than I expected. I am not sure what to do. I can think of three ideas. I can remove the pivot clamp, flip the bracket that fits on the top of the steering tube upside down, cut the top of the steering tube, and reassemble. Or remove the pivot clamp, turn the bracket that fits on the top of the steering tube backwards, cut the top of the steering tube, and reassemble. Or the path of least resistance, get the curved slider. Meanwhile, I will continue riding the Vendetta on the trainer as is.
I tried the wedge that fits under the (S40) seat pad. I could not get the headrest into a good location using the wedge, and it was not especially comfortable for me. I am considering splitting it in half and trying again. That might be the easiest and cheapest way to restore visibility.