after u get it running good , keep a close eye on the compression , the one ring will wear on the exhaust bridge as with most of the jap 125 motor , if you dont replace it often it will take the bore out in that spot , so what we use to do was change ring very often every 9 hrs at least and i would drill the 2 holes on the exhaust side 1mm larger for better lubrication , did this for years with no dramas , another area to keep a close eye on is the power valve they last very well but i had one break but it stayed in position , the rider complained it was down on power as only one valve was working the bike kept going , so if the power valves have a lot of wear and slop replace them to be on the safe side. all ways replace base gasket and the head o rings every rebuild , i have come across the kawi o rings being slightly to large for there grooves so pay special attention to this all use another brand.
