[patkeefe]

I am finally getting around to the top end of the 2.7 track engine. The P&C set I picked up is purportedly a used set from Andial, which looks like about a 10:1 CR. These were not cheap, but cheaper than finding Nikasil cylinders and new JE pistons. The P&C are Mahle, in very good condition.

Here's the rub: I bought these from someone who had three sets in the shop. The weights (according to my triple beam balance) run from approximately 494g to about 514g (I'm too lazy to get my notepad from the basement at the moment). I would ordinarily just take some weigh off around the pin bosses, but these pistons are sort of flimsy, for lack of a better term. Weights are including the pistons and pins, no rings or clips.

My options are:
contact the seller, and see if I can match up the weight groups better,
try to get the things to weigh somewhat the same (strive for perfection),
try and get them right on in opposite pairs on the crankshaft, and get the entire set within six grams.

I seek guidance!

Pat