The old 30 is the only un-ringed Saito I have owned. Both of my .45 as well as the 45 Specisl are ringed engines. All are fine runners. Tach readings aren't everything; I really like the mild cam timing for my low and slow, figure eight touch an go flying fun.

The 45 are very nice running engines.

The little 30 should be too, once it gets its fresh, ringed piston.