Again, sorry, it didnt come across very clear. I tested the frame with another wheel, just incase it was something to do with the dropout spacing etc. The wheel had shimano 11 speed fitted.
Yes, that confirms that there is a difference in the cassette and/or freehub.
Just out of interest, did you replace the cassette lockring?
Also, are both wheels tested are Fulcrum?
@coventry_eagle started
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Again, sorry, it didnt come across very clear. I tested the frame with another wheel, just incase it was something to do with the dropout spacing etc. The wheel had shimano 11 speed fitted.