Thanks Blumbly, glad that you can identify it from the limited info that I had. I think that perhaps they are not the same size cylinders after reading some of the posts here. So if I understand you correctly it would be easier to just buy a second-hand piston and cylinder and install that, what should I pay for an 2nd hand piston and cylinder? Also, are there any traps I may run into when trying to install the new piston/cylinder?