HEllo; We had a similar situation today at the field, it was a 70 surpass in a protege. I leaned out the low end 1/4 turn, took off and flew it for long enough to get it hot. I noticed that it was still smoking like hell when I advanced the throttle but would stop when it reach it's peak revs. I had a fun flight anyway when I landed it I went another 1/4 turn leaner on the low speed needle and two clicks richer on the main needle. The next flight was much better.
I don't have any first hand experience with that Saito but maybe there's something here you can use to solve your problem.