Lots of oil smoke from exhaust at flagpole corner on reverse run, presume oil surge but did not happen every lap,only last one or two. Only saw one other car suffering same, mine has Apollo fitted , other car not. Any explanation why only ours..? Oil level on mine checked on max line before runs, presume no long term damage, engine running fine,will take car on long run to burn out oil from exhaust, any ideas how to prevent in future, has not happened on previous sprints this year, sump still with original foam and gasket,does Dave Andrews gasket mod stop this? Any comments appreciated. Philip MAtchwick.