Hi, after dura ace 8 speed down tube shifters, series 7401, 7402, 7403,7410 to match my 7402 8sis rear derailleur.
I've been informed it won't work with 7speed levers so thought better go for 8 speed!!!
Shimano still do a set of 8spd downtube shifters , readily available. Just a thought if you can't source DA items. I'm using a set with my 8spd 600 Tricolour group on a Look KG86 I'm currently building.
