Until right now, I know the focus knob function is useless when use mentioned assembly without a recessed lensboard. And, the aperature adjustment level can't be reach without a chopstick if you mount the 72 on a recessed lensboard. Further more, the big outer diameter of B+W 95mm wide-angle PL will just touch the focus rail if you don't pull down the V's front cover. Please advise how to use this dream lens on Linhof V.