Hi Rod,
I think you mean the rubber upper mountings from radiator to bonnet locking platform, yes? If so, they are indeed a push-fit. If you look underneath the locking platform you'll see a bulb of rubber which passes through a smaller hole in the platform. I can't remember now whether it's easier to release the rubber mounting here or from the top of the radiator. Either way, they'll be tight and you will need the assistance of a lubricant and a blunt tool to push the rubber bulb through its mounting hole.
I hope that makes sense?
Simon