So if you are melting the tyres on one side only (in my case left front) you would simply change the spring on that wheel only?
and does it need to be softer or harder (am I 'skidding' or pushing the wheel into the ground)?
I normally do this by playing around - first down and then up but this surprised me because in practice doing around ten laps at a time there were no issues. It was only in the race when my driving was somewhat ragged...
I always use symmetrical spring settings left/right. On most clockwise circuits, you will find your left tires hotter than the right tires, because they are worked way more. Only at ovals or a circuits that have predominantly the same turns you use asymmetrical springs. Want as much symmetry in the car for balance, apart from camber/starting pressures on the average circuit.
In your case I would still put some ratio to the rear, i.e.stiffer rear springs, or softer front springs if you can get away with it (not bottoming out). That would be the first adjustment I would make. Remember by your driving you can put more temps in the tires as well, prolly you pushed more in race than practise. Good luck.
Here is the set-up that I used.
https://www.mediafire.com/?21flks8nlbict6fThe rear tires tend to heat up more than the front with this set-up. I probably needed a little more understeer to keep it pointed in the correct direction (of course, it would have helped if I wasn't "over-driving" the car too).
Yes, Axel uses proportional springs for Ferrari 65, even more to the rear, and so the temp balance will be to the rears. If the temps get too high in the rear too fast, you can correct this by entering turns harder (loading LF or RF more depending on turn/track), or set less rear ratio (softer rear springs or stiffer front springs).