I want to thank all who responded to my "cold weather blues" post and for the prior related thread. I learned a lot about diesel fuel and cold weather. As a result, I obtained and added Diesel 911 and a new fuel filter. The JD 990 is designed to be self bleeding so I expected her to start up without much delay after servicing her. I tried the hair dryer but about burned up the extension cord so I switched to a high intensity work light and draped aluminum foil over the light, the fuel filter and lines to help hold the heat. This method seemed to work well. The components got really warm without burning up the wiring, and I could leave the lamp on for extended periods without standing there. Anyway, I added the Diesel 911 and the new filter last Wednesday and hoped she would start that evening. No luck. She wouldn't fire at all. No luck Thursday or Friday either. It took until this morning (Saturday) or 2 1/2 days after adding the 911 and changing the filter before she fired up. I tried not to crank too long at a time and not too many times to avoid running down the battery or burning up my starter. I could be wrong, but I'm of the opinion it just took time to dissolve the paraffin and bleed out the air. She's now running like a champ again and just in time as it's snowing and more snow is on the way. I feel so much better. I sincerely appreciate the responses and thoughtful advice I received from the TractorByNet forum.