alright i have found out that i can get an adaptor plate that sits on top of the carbie with the filter on it that screws down,,,the only trouble is that i am needing one that will sit under the turbo scoop. eventually i will buy myself a twin sidedrapht setup but this will do for now. i have to get a filter that is 5cms. and then the adaptor plate can only be 2 all up. so yeah where would be the best place to get one of these??