I now use the Kodak RA-RT Developer Replenisher & Blix at room temperature for 2 minutes each as recommended here on apug. Its working great and is much less expensive than the Fotospeed kit I had been using. The Kodak stuff also lasts much longer when opened due to there being 3 parts to mix for developer and 2 parts for the blix. The developer smells very sweat, kinda like washing liquid.