Afternoon well got into o rings this afternoon once I had a proper look in daylight and that was an odd experience as I did most of this at night with lights - there was a drip a steady drip from the oring so dismantled and put new orings on and there was a drip now I am wondering if I should put both sets of orings on the old ones were in really good shape which made me wonder if the clamp had never been tightened up any ideas please oh and the bottom seal on the rad is suspect so will put another new one on and lastly ran her all day whilst I was doing bits and pieces and temp stayed absolutely dead centre and she is running very nicely indeed