my .60 2 stroke shakes pretty bad at idle, i'd like to balance it, anyone have any hints, tips, suggestions, warnings, advice, pics, etc, etc,?

An engine imbalance is not likely to show up at idle, most likely the low speed mixture or too slow an idle speed is causing the shake. An imbalance that shows up at idle would be frame shattering at full throttle.

i have to completely disagree with you on that. idle is the most likely rpm for an imbalance to cause severe shake. from a physics point of view,
the amplitude (magnitude? i've been out of school for a while) of the vibration will decrease with an increase in frequency (rpm)

a few examples,
tie a long string to a doorknob, and hold a slight tension, pluck it and it will vibrate about an inch either way, and with 5 or 6 waves, tighten it, and you get less than 1/4" vibration, and 10-15 waves, and it's going faster.

harley davidsons. since the connecting rods for the two pistons share a comon throw, they might as well be a one cylinder engine. watch one at a stoplight. the front end will be vibrating atleast an inch each way, i saw a hotrod that lifted the front wheel a little with the vibrations....rev-up to go at the green light and it smooths out to a small, very fast vibration.

an imbalance that shows up at idle smooths out at increasing throttle, but still robs power from the prop.

I,ve ridden enough Harleys to know that the vibration increases in intensity with an increase in speed, you just can't feel it much on a RubberGlide, the vibrations at idle are more from the uneven power pulses than from engine imbalance, a Sportster with a solid mounted engine turns into a butt numbing vibrating machine at around 5,000 rpm and has been known to cause liscense plate brackets to break from metal fatigue. So try some other argument. An out of balance prop is barely noticeable at idle but at speed can vibrate the tail off of the plane.

of course, ballance the prop and spinner. I would not mess with the engine, as far as ballance goes. Let it shake. And by the way, the harleys cant be in one jug...the pistons do NOT fire at the same time, its one right after the other, and they do vibrate all the way through the rpm range, at different speed of vibration of course, and also not opposed like jap bikes. Why do you think the chicks like harleys sooooo much?! lol let it shake bro, let it shake. All single cylinder engines have a point where they shake more ......or less. My 90s vibrate at a little after idle, but smooth out just fine.
just my thoughts.
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balance the prop.

Also, at idle the shaft can vibrate front to back causing a nocking and vibration that stops once the rpms are increased and the prop pull increases. Bushing engines tend to do this more than bearing engines.

does that make any sense?