I tried Craig setup with 2x1.8 front, and 3x1.7mm rear, but with 50wt front and 32,5wt, and it is very good ! A little bit too smooth for my favorite track, but a very good beginning with the big bore. The car seems to fly over the track. I just missed to limit front travel by 3mm... then the caster block is rubbing the front arm.
I will try with 60wt front and 40wt rear and let you know
