I bought some 10-speed Campagnolo shifters from somebody on the forum a couple of years ago and now want to put them on my old Basso to convert it to 10-speed. It was 9-speed up until last autumn when I took it out of service . I removed the worn-out Ergopower controls from that bike, scrapped the shifter parts, and used just the brake levers on my singlespeed bike project last autumn. I was going to buy a 10-speed rear mech for the Basso but wondered whether the cable pull of the 10-speed shifter will be compatible with the old 9-speed mech? I could try it to find out but it is quicker to ask here!