Abstract: A method and system for gathering enclosure documents for insertion in an envelope inserting system having a plurality of enclosure feeders for releasing enclosure documents and a plurality of pusher fingers mounted on a pair of endless chains for gathering the released documents. A plurality of flexible extension fingers are connected to the downstream end of enclosure feeder so as to support the released document before the released document is pushed off by a pair of pusher fingers onto a chassis deck. The downstream ends of the flexible extension fingers form a gap with the chassis deck, allowing the documents released upstream to pass under the extension fingers so that the document released from an enclosure feeder is stacked on top of the documents released from the upstream feeders. Because the extension fingers are flexible, the gap under the extension fingers can be widened by a stack of documents released upstream.