BSA B50ss Motorcycle

1972 BSA B50ss, 500cc, matching numbers.
Owned for 10 years and not seen any tarmac in that time, Started off with a project bike and fancied something a little different. Mostly new parts including wheels, spokes, brakes, new wiring loom, Pazzon ignition, new generator and rotor, stainless mudguards. Engine rebuilt with NEB crankshaft and rod, forged piston and rebore by PeS, all balanced for smoother running, new valves and guides, rocker shafts and all bearings and seals replaced.
The tyres are probably 8 years old but not seen daylight so should be ok.
A compression base gasket was fitted to lower the 10:1, now more like 9:1 which helps with starting.