After this season is over I’m thinking about revamping my position. I hope to get lower in frontthan my CarbonX’s with arm rests on the base bars will allow. I think that my headset might be a good place to start since I like my bars. Right now I have a FSA Orbit X which adds a fair amount of height. Do some headsets have less stack, and if so, which is the lowest?
Ritchey WCS threadless will lower you about 8 mm from that. I think King and Race Face also have headsets within 1mm of the WCS short stack height, you could also “face” about 2 mm from the bottom of the stem, or even remove some material from the top of the head tube by facing it as well.
Check with VES, he may be able to help you find and machine what you need/can.