Thanks cyccommute, I cranked on the clamp more than on any fd i ever installed, 3 to be exact.

I was thinking about trying to come a laterally adjustable braze on clamp which shouldn't be difficult if I can get good geometry for the fd to clamp.

I also thought about tring to come up with something along the lines of a travel agent to change the actuation of a mtb fd to make it work with STIs and found Shimano filed a patent for such a derailleur in 2013,

BICYCLE FRONT DERAILLEUR WITH A VARIABLE ACTUATION RATIO - SHIMANO, INC.

I wonder if it will ever make it to market...