In reply to NottsRich:
I tried the rambo IV on to the jorasses and I didn't think they fitted straight out of the box perfectly like the rambos do to the freney (size 46) but I've never seen a fit as good straight out of the box of a pair of crampons to a boot as that. However if you tweak the bails a bit I reckon you could probably get a good fit to the jorasses.
Bending the bails to get a better fit is normal (apart from on BD crampons as you can't bend those bars). I normally use mole grips (a vice would be good too) to do this, I think a hammer would be the wrong tool for the job, Its quite a time consuming process if you need to change the shape much and can be a bit of a steep learning curve!
Really the best thing is to go to a shop and try a few pairs on the boots. I think you'll prefer the front point protrusion of the cyborgs to the G14.
In N Wales there is a lot of good shops Joe Browns has a large range of crampons and I think the shop stock is the same as the online.
I'd take scarpas advice of g14 or rambo with a pinch of salt, I think they must have an agreement with Grivel of some sort. Firstly the fit of these crampons is quite different and the boots which fit one well rarely fit the other well (although this could partly be due to the bails, the rambos fit very assymetric boots far better than the g14). Secondly scarpa used to recommend G14 for freney / cumbre and I've tried them with and without asym bars and in both types of bail fitting and they are some of the worst fit to the freneys out there!