I've measured the play in the splines to be 0.26 mm
I did this by fitting the intermediate shaft to the front plant gear housing and wiggled the fitting and measured with a DTI
The point of measurement (the DTI probe) was 50mm away from the centre of the housing, and the splines are 14mm away from the centre. The measurement at the DTI was 0.91mm
A bit of trig tells me that I've got a wiggle of 1 degree (edited value - offending trailing decimal fractions removed)