I'm building a rando/touring setup. All new components with the exception of the front der which is NOS.
Cassette: Shimano 9 speed 11-32
Rear Der: Shimano Deore XT
Front Der: Campy Record triple 10 sp
Shifters: Campy Veloce 10 sp brifters
Crankset: Sugino XD600 triple
BB: SKF 113mm
Chain: Shimano 10 sp Ultegra
Things have gone together well. Chainline looks good to my eye (middle chainring lines up very nicely with 5th (middle) cassette sprocket.) I'm using a Jtek Shiftmate #2 to mate the brifters to the Shimano 9 sp rear der.
Just started adjusting rear der, and it goes through the gears reasonably well. An occasional hiccup as you'd expect pre-adjustment for indexed shifting. Chain tension seems fine at both extremes of the range.
However, in 10th and 11th gear (middle chainring and largest or second largest rear cog) the chain wants to run off of the middle chainring and drop to the granny. This happens even if the front der is not involved in any way. I'm tempted to try a 9 sp chain but it's hard to believe that 0.4 mm (approx) will make a dramatic difference.
...and, yes, I've chosen a mixed breed approach and to some degree getting what I deserve. But there's evidence that it should be workable, and reasoning behind each choice.
Appreciate your guidance.