Yeah there pretty expensive. you just have to look about. there is a bloke on ebay offering a rebuild including taking the engine out and re installing for 1800 inc VAT thats about the same as a decent sized piston engine. I need to talk to my mum about it. thinking about sending it to Hayward Rotary as they offer a 30 month/30,000 mile warranty for competition use. but there are expensive. LOL my mum rules. Engine Rebuild for my birthday FTW