I called Pentax parts and service to order a part for my tr0 flash, and they sent me a parts diagram. It appears that the arm and pin that lift the base locking pin arent't available as a separate part. I believe the entire base has to be replaced. Looking at this diagram, which is somewhat confusing, the part number for the base assembly appears to be 60. I've written to them. I'll let the list know what it costs when I find out. I know someone here encountered the same problem just the other day. Paul
The parts diagram: http://photo.net/photodb/photo?photo_id=6939829&size=lg -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.