How much movement is accptable in your driveshaft joints? Ive fitted my shafts to the diff and hubs and always though the slack I had in the drive was in the old diff but it is actually in the outer CVs, you can move the wheels a good couple of cm before movement is taken up by prop- diff and shafts which all feel pretty good, whats the allowed amount if any or are my joints about had it

 

that's sounds about right as you would have movement on the outer and inner cv joints and from the diff to the prop sounds like the usual whiplash