Hi Al , Thanks for taking the time and trouble to answer my question on the Roland Vk-7m module .
Yes I agree it is very impressive and compact .

Whilst it goes without saying the "D beam " is a good idea , for my purpose with the midi accordion I would prefer the basic control of slow /fast rotary , and brake to be controlled by simple foot switch operation so as to keep the right hand on the accordion treble keyboard .

I'm waiting to hear if the modification can be carried out successfully .

regards ...giovanni