I am having a hard time finding the part numbers for the SUPPORT filament that Stratasys recommends for this printer. I thought there was just the one, but I bought some on Ebay and it was black... I didn't realize that it came in black. The stuff I have been using (ivory color) is SR-30 PN 345-42207.The stuff I purchased from Ebay is black, P400SR PN 206451-0001.The label for the P400SR says UPRINT on it... and it was certainly original factory packaging.Can anyone point me to a list of all compatible filament part numbers for the UPrint SE? The user manual doesn't have it and Google couldn't find it for me. Seems like something that should be easy to find.