yes unfortunately there is some play in the connecting rod.... So I suspect I will be splitting the case which was another thing not in the budget but oh well such is life. I took a micrometer to the cylinder and it measured 69.9mm so it is probly on the 70 bore. Isn't that too big for a blaster piston? Seemed common for the dt200 but large fir a blasterThanks again for the info guys. Keep it coming!