Thanks Aldo, I'll be especially interested in what clearance you find you need on the clutch packs, to get that nice clutch feel.

With regard to the contact cement and the cork clutch linings, I use a method something like yours but as I recall, acetone works vastly better than petrol as a solvent. My experience has been that life's too short to spend removing cork a bit at a time, when acetone strips it off in moments. To attach linings I let the contact cement sit for just a couple of minutes, it is still quite squishy, then I clamp the parts together for 48 hours. You have to sort out some suitable packing, flat pieces of wood to squeeze it between, and lots of clamps, ahead of time. You need even pressure from equally spaced clamps. If any extra glue squeezes out, I clean it up with acetone while the glue is setting.