Picture the scene. Campag 10sp triple chainset, but modded. (DIY super-compact - outer ring removed and single chainring bolts fitted.) Campag (non QS) Daytona triple front clanger with limit screws set so no overshift onto phantom big ring. Veloce 'escape' 10sp levers (from the good ol' days when one lever worked with double and triple systems). Rear Xenon 10sp mech.
All working perfectly but the rh shifter has done the normal thing, i.e., it now dumps the entire cassette with the thumb lever when it should just move one gear at a time. Then I spy a nice set of Mark III 10sp levers on here (Veloce Ultrashift - so presumably 2009/10) although it slips my mind that these new-fangled versions are double/triple specific but purchase anyway. After much wailing, gnashing of teeth and breaking of tools, succeed in fitting to handlebars and cabling up. Rear indexing absolutely spot on. However...
The front mech/shifter combo is no longer man enough to throw the derailleur from small ring to middle, however much I play around with the limit screws. Might a different front one (QS or post 2010 Veloce/Centaur) fix things?
Plans B, C, and D all involve calling it quits and either attempting to repair the original rh lever, sourcing a working replacement, or transferring my 10sp Record Ergos over from my posh bike and beginning the painfully expensive process of upgrading that.