Kickdown issue

I have an appointment on the 19th. The trans guy still thinks it’s linkage related. He keeps saying the rod needs more length to activate the KD but the KD lever already goes the maximum distance rearward when the pedal is floored so, I guess he will find out.
Can post some pics how I have it set up at the carb and the bell crank? Without seeing thus all we can do is keep guessing. Ask the tranny guy what year the vb is and the case is. Kim