Thanks for the replies.
I have double checked most things so many times it's ridiculous.
I am well aware of the anomaly of the BSA points rotating clockwise and the rotor traveling CC. Definitely BTDC.
Funny, I have a friend of many years named David Martin who is a mechanic (ten car garage at home full on 60's muscle cars- all mint all running)
who thinks it should start as is too. He has 2 Harley baggers but has seen a lot.
I spent a long time getting float heights correct. More on this later maybe but don't want to turn this into a float height thread.
I don't know what else it could be but the valves and compression. Was actually a bit under 90 psi and as I said, on leakdown was hissing obviously
out the carbs and exhaust. Dropped from 100 PSI to 65 PSI in a minute.
Beach, when apart I used dial gauge to find my timing point, if you remember I have no usable notch in the flywheel so this is what I had to do.
A few posts back I included a photo of my dial gauge through the plug hole as I was double checking that.
Valve timing was simply lining up marks on the gears. Fine points of adjusting valve timing beyond me but I did check the valves opening and
closing points with degree wheel on rotor side.
Machine shops are rare around here and can be pricey. One gave me an estimate of $400 to do the valves and mentioned he thought maybe
would need new guides. (I don't think so) Only an estimate but in my experience you don't often get a lower price when a vendor puts out
a number. Kind of expensive, yes?
Oh, also, I have a decent torque wrench
and now have the 15mm crow foot to do the nuts.