Maybe this is a familiar story:

Long ago, I deleted and then reinstalled Jazz 2, mostly to clear out the home-cooked levels, because my collection had become way too bogged down with garbage. I intended to re download the levels that I knew were good.

Unfortunately, most of these levels were from J2C, and I somehow never got around to getting those levels before J2C went bye-bye. Is there an archive out there that I'm somehow not finding? J2O has got a lot of levels, but some seem to be just plain gone.