Well folks the saga continued.
She ran for twenty minutes and stopped,I prayed,and not Sunday church sort of prayers.So I left it in a corner 'til yesterday.
Stripped her,had 75psi,but for fun I changed the piston,95psi,checked the crankcase faces,smooth as a babies behind.Checked block face,the words of the Nathan Carter song,"Rock me like a wagon wheel " came to mind.On to the glass and the wet 'n' dry,half an hour later the rocking stopped.
Reassembled,pulled the cord,no go,out with the drill.Got her to run for about a minute,full stop.
I had been bleathering to a mate about it he said "spark plug". I said couldn't be,only about an hour and a half run time on it including the time I ran it with the drill.But I changed the plug anyway,no go.I tested both plugs,cold I had continuity on both,but when I heated them up,only one had continuity,the one I took out was done.But still no go
Changed the points,she tried but no go.I give up,sat down with a bottle of 10yr old "Clontarf" whiskey.Very tasty.

Light bulb

moment,put the timing light on her,intermittent spark,pulled the flywheel yet again,nipped the points wire,stripped a half inch off and screwed it back in.Away she went.Ran for ten minutes before the hail drove me into the house.Went out a few hours later,first pull,ran for twenty minutes before the hail came again.

Ran smooth,I have never heard her run so well
I am not sure what was wrong it,but I think it was a combination of wobbly block face,purchased of fleece bay,the plug and points being kaput,but I am now confident that she is fixed
So thanks to all for the encouragement and advice and this bitsa which is no longer an SJP but that and a whole lot of others.
I now only need a con rod to assemble another block and crank.Then a head,now if I get those,maybe a leg and gear box I might find an ignition system somewhere, will I or won't I
