Hi Grumpy and Roebuck,sorry it has taken so long, been busy. Have gotten new rings ( thanks Roebuck ) fitted them and reassembled the motor, double checking everything as I went. Gave the motor a coulpe of easy pulls just to make sure it all felt good, 1 quick pull and off it went no smoke to been seen anywere, but a bit of coughing. What now!! You guessed it, dirty fuel. Being as careful as i was i grabbed the wrong fuel container, needless to say I had to flushed out fuel tank,line and carby, put it back together, one pull and its running like a brand new mower. Thanks again Grumpy and Roebuck, much appriciated. Thank you to Gadge, all information and/or help appriciated.