AnthonyH
I have not done the bearings on the a Ryobi, but the local bearing shop had them for an Echo that I messed around with. We do not have any small engine shops in BCS but if we did I would have looked there as well. Basically you furnish old bearing so they can measure ID, OD, and length. Same for seals. For the price that Ryobi sells a compete new weedie, the bearings are not anything exotic.
With the same measurements you could probably order them via internet,