OS 46LA port timing

The bulged shape on OS 46LA's crank case for Schnurle scavenging main port shows the possibility to make additional port by myself. Schnurle ports were were examined precisely setting a comparison criteria on YS 45 SR motor's design, because I believe in YS superb performance as a reliable competition power. Observations show that the timing of Schnurle side ports are exactly the same but exhaust port opening timings were considerably different each other, this is because of prerequisite conditions of use, the former a normal muffler on the other hand the latter a tuned pipe. Anyway, in order to make up OS 46LA to a competition motor like YS 45SR, some desperate efforts would be required, engraving gas passing way Schnurle main port in that crank case and doing main Schnurle port on the closed cylinder. As I hope to see what will happen after a modifications on 46LA motor, this work would be performed relatively soon.