I have just taken the cylinder off.I have inspected it and it has three cracks in it so I presume it is cream crackered.Now I have the dilemma is it a new cylinder or a 300 kit?The only peroblem is I have a piston kit winging it's way to me now.Does anyone have a 'B' piston front cylinder they want to sell?If not any advice on alternatives would be greatly received.