My 1997 Proflex Animal is now the proud wearer of an m900 XTR crankset. I know its not quite period correct but it is such a nice crankset I couldn't resist it and sure enough it is great, light, strong and decent looking. At the moment I am just running a middle ring because, rather strangely, when the granny ring is fitted it is very close to the middle ring. So my question is as follows: do m900 XTR cranksets need some sort of pillar or spacer to position the granny ring away from the middle ring?