A very sweet running set up Nigel and seems you are pretty close to the tune you are seeking, as with the hard mount motor everything needs to be balanced right, I never ridden a well set up Seeley, but do know my Featherbed set up with my Commando motor, crank balanced at 72% is pretty close for my 850 motor, but with a 2S cam profile and major port work and open exhaust system all plays a part, big spark and carbs tuned right make one fun bike to ride, I wish I had the money to throw in Jims lighter rods and pistons and everything else, that Jim sells, but my set up is built for the road and it's been in the early 80s since I done track days out at a very tight Lakeside raceway here in my home town.
My set up works great, handles like it's on rails, has lots of torque and revs very freely, but sometimes I got to think Al's thinking is so far out, he seems to be an expert on Featherbed frames but has never owned one or rode one that is well set up, and of course HP as well a good handling frame will win races or be up there with the top riders, a bike is no good unless it has a good rider who knows his bike and how its set up, rider skill, bike set up as well a good motor all plays a major part, by the looks of things Nigel you have a very good understand of your workmanship, love to see it in action, less talk and more action is the way to go, not like some who are all talk and expert in everything except getting on the bike and riding, sorry Al, but I think Nigel is on a winner and knows his stuff, good on you Nigel, very entertaining and a joy to be watching.
Ashley