Tim,
Well said. I talked to Andial and the reality of these pistons is that the solder trick won't work because of the shape of the dome. THe smallest gap between piston and head, where you need to measure it, isn't accessible to solder. So I went back to my original measurements that are coming within spec witht he standard shim...
I'm going to start bolting them up! (WHich I believe you recently and enthusiastically advised...
)