Thanks for the encouragement Rogerbee1 ;-)

Okay I think I worked out what is going on with my jcm.
It looks like MorphingClothes multiples the morph target values by whatever value is in deltaAddDelta when transferring to the clothing item, so in the case of the Kick jcm it was multiplying by -0.016667 aka 1/60th. This tallies with what Cage said, that the jcm morph should be at 1.0 at -60 degrees. Sooooo my earlier jcm morph transfer was getting 1/60th of the correct value, add a bit of rounding error and I can see how things would work at low kick angles but deteriotate a higher angles, and explains why I was having to use a value of deltaAddDelta 1.
I didn't realise Morping Clothes did that, but now that I do know I can easily work around it. All I need to do is copy Antonia cr2 and set the deltaAddDelta to 1 or -1 for the jcm morphs, and then transfer to the clothing item through Morphing Clothes .

Ok I tried my suggested work around and the morphs come out 60 times bigger so it appears to be a valid theory. I now need set up the jcm in the shorts again, but I learned something, and that's got to be a good thing, 

Cheers

Ian