I know all the information of what is needed to break in an engine on this stand although I think there is more to investigate. The original break-in Dutch is using a high performance synthetic 2-stroke oil but what about hone oil or other oils, as example I did find a special thin SAE20 spec break in oil.
http://lucasoil-motor.com/en/high-zi...807106263.html

But so far I was told good results can be made with at least 4 hours running also depending the rate of pinch. I was also told about an engine running for 2 days...

Most important is that the 1st real start on the track must still be carefully done because the piston will get some real heat and expands more. Also due the heat there will be a grow bringing back some cold pinch.
I think with 2 tanks on the track slowly building up the performance with maybe a small heatcycle between them it must be enough to have it race ready.