Just swap the springs out for softer ones thats what I did.
This was my thought as well?
If it's just the springy-ness that's the issue then you could just swap them out. I bought a bag of springs from ebay once for next to nothing. And it's very simple to do.
Another possible idea (** DISCLAIMER - NO IDEA IF THIS WILL WORK - IT JUST OCCURRED TO ME) is to cut some of the existing spring off and then stretch out the remainder to the same length. This should make it less stiff. (see disclaimer as this may be a stupid idea - but, in my head, it works!)