When customizing a paper size for an HP450, like a 20 X 24 or similar, the size seems to be permanently saved for the current drawing, but as new drawings are created and I go to find that same size or other another previously used custom size, it appears that the list of "custom sizes" are all 8-1/2 X 11.  We now have quite a list of about a dozen custom sizes listed as "Custom Size1, Custom Size2, etc., but they have all reverted to an 8-1/2 x 11. Any suggestions for permanently saving and making different sizes available for future dwgs? Thanks in advance - Don