I am concerned that you may not have Drone cylinder sleeves there. I do not remember mine having a lip on the top of the sleeve.
Mine all are simple straight cut cylinder sleeves with no lip on the top. There is a shoulder down inside that the cylinder sleeve butts up against, so it doesn't need a lip. But maybe its my memory mixing things up. Here is a pic of one of mine, Granted this is the BB version. I'll have to look to see if I have a pic of the bushed version someplace too.
The bushed version may not have the shoulder on the crankcase for it. I don't remember now.