I have just opened up my engine, and find that it needs new pistons and rings (plus an assortment of gaskets). However, Siromer no longer support this engine (The Q type is made by Quanhuai, who are now out of business). Does anyone out there know where you can get spares? Or does anyone have an operational "Q" type engine, which they would sell? A new Yandong engine is going to be around 2100 pounds, which I really don't want to spend.