I've been researching options to repair a hashed rotary pad on a P200, and it seems that finding someone to repair the pad itself is quickly becoming not an option, and new engine cases are more than I have to spend.
A couple of folks have pointed me to a reed valve solution from SIP: http://www.sip-scootershop.com/en/products/intake+manifold+drt+_40311600
Sounds good to me, but this is my first rebuild, and I am wondering how "bolt on" it really is, how extensive any modification to the engine case might be, etc... I've searched the forum and found some reed valve install threads, but they look more like performance oriented upgrades than the 'rotary replacement, but keeping it stock' type of reason I'm doing it.
If anyone has installed one of these, I would be very appreciative of any information and advice about it. Thanks!