hi yer it is mine actually and yer i changed the the piston at 250 hrs i think it was about £150 inc piston camchain, seal, and gaskets not a difficult
servicing wise try and and do it every 10 hrs use , just a oil change new filters x2 every now and then , valve clearance and remember to clean the two oil screens under the engine .
other than that great bike , i have just bought new body work to change the colour
