After 3 days not a single droplet, not even after warming up, only a few drops of oil fell down when priming the Morgo.
And much more when the pressure relief valve of the Morgo opened!
My Ariel SQ4 screwdriver knowledge is finally getting better
Of course I can't say yet whether the balancing was really worth it, but "felt" for me it is of course much smoother now (but may be also the correction of the valve timing).
1923 James Model 12 500ccm v-twin -- 1960 Chevrolet Corvette C1
1926 Douglas EW 350ccm flat-twin -- 1967 Chevrolet Corvette C2
1936 Motosacoche 500ccm single --- 1979 Chevrolet Corvette C3
1948 BSA A7 500ccm parallel twin -- 1955 Ariel Square Four MKII