I can't imagine a PAW so noisy that it actually needs a muffler, or is it your club that demands all engines muffled?

If you can run it without all the better.

I agree with the previously expressed views that you shouldn't go anywhere near a PAW 09 with an electric starter. The first PAW I bought was 2nd hand from a clutz with an electric starter, he ground about 1.5mm from the front housing. Apart from that though the engine starts and runs nicely.

Spend a bit of time getting to know what it likes and it'll start quickly every time.