I was just given a virtually perfectly example of 1973 AT2 125  wish i could post pics, it was given to me by the owner of the company I work at, his mother in-law passed away and she and her husband were big enduro people, this thing is mint other than it hasn't been running in a while, the paint is factory nice and overall, the condition is 9/10. until you open the gas tank that is, anyways I'm a tinkerer and i have allot of experience with V8 gas engines rebuilding and the like so I have found my winter project, I am glad to find this site as i have used these for my jeeps throughout the years. the bike came with some old orininal parts in boxes and a list book of all services out of a shop down in Louisville KY did the repairs, riders manual and Clymer service manual 69-76
i am 6'1" and weigh 180 is a 125 much too small for me to even ride after I am done?

Greetings from Tennessee 
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“I am 6'1" and weigh 180 is a 125 much too small for me to even ride after I am done?”

Absolutely not. I’m a few inches shorter than you but weigh the same at 180 lbs. I have a few smaller cc bikes and love riding them. (60-80-100) Small bikes are a lot of fun, assuming you aren’t talking about riding it on the road in traffic. Small bikes are a bit unnerving when playing in traffic. But they are a hoot to ride around the yard or some open land. It sounds like you scored a beauty.