Fit issues?
Go custom.
Us: pilot is 5,7" and stoker 4,10".
Have owned 4 custom tandems in the past 38 years. Proper tandem fit is an absolute.
Another choice: Co-Motion Periscope models. Ultra adjustable up/down. Also optional adjustable pilot and stoker stems and 700c or 26" wheels.
Can easily accomodate 6'3" to sub-5' riders, either front or back.
Just our input/experience.
Pedal on!
Rudy and Kay/zonatandem