I too have an old Daryl Patiorama sliding glass door in my home. Believe it or not, my husband will not replace. We have four children and the door is opened and closed SO many times in one day. The rollers recently are not working properly. My husband put in charge of looking on the internet to locate replacement parts for our Daryl Patiorama 38. I FOUND IT!!! You can find replacment parts at: www.glassdistributorsinc.com
I found the replacement rollers for my door. So, I guess I have it keep the old one after all.
Thank you,
harleyhouse2@aol.com