You're welcome
Its a gravity fed injection pump and needs a large feed, took me a while to find it after using various billet ones that I'd drilled out Sytec alloy nipples/adaptors to make sure the flow was good. Was then worried they might snap. The original and the Baldwin one seem to be a "strainer" rather than a filter, ie large holes to avoid restriction. Also switching to 1/2" rather than 12mm threw up more options on the search.