Oh good catch ... well certainly can't explain that one. For some reason I was thinking 2.209".
After rereading it seems liek mayeb they mean .209 from the center of the limb bolt to the most inset portion of the slot cut into the riser ... that even seems like not enough space.
I think the whole drilled for the l,imb bolt insert is usually around 27/64" which is near 1/2" so I don't see how the slot cut in the riser can be only .209" from the center of the limb bolt. The limb bolt insert and slot in the riser would be almost in contact ... or mayb even in contact ...
http://***********.bowsite.com/tf/pics/00small76593406.JPG
way more than .209". Must be some misocommunication womewhere here.