Thank you all. Its not my engine, I'm just fixing it. I replaced the
head gasket and put in the carb kit, but it still smokes white on start
up. However, as the smoke goes away under load, I don't think we're
looking at a ring job - yet, in spite of burning 100:1 for a season.
The owner has been duly advised and admonished to mix his fuel to 50:1.

Oh! One more thing: 'Meye5", you are truly a sublime yet pathetic
asshole.

Gary