RE: VX18 thread
Okay, finally some pictures. The first three are of the bare sleeve, obviously, and are pretty self explanitory.
The next four show the piston at BDC. The first two are of the boost port: you'll see in a later photo that there is no channel in the crankcase around this area, so the boost port is fed by that little hole in the piston - air/fuel comes out that hole and into the port, where it travels up and past the piston, into the cylinder. The next picture shows the poor alignment of the piston and the transfer ports - yes, the piston is at BDC! Also shown is the exhaust port again.
The next set of pictures shows the engine reassembled and with the piston at BDC - first picture is the boost port and the last picture is the exhaust and rear transfer port.
"Don't bother". Making more and more sense.