Older L lens repair 400mm 2.8L II (non-IS)

[bchernicoff]

I own the pre-IS 400mm f/2.8L II and see that it is not listed on the CPS repair eligible list. My lens is working great at the moment, but I am concerned that if the USM fails or something else goes wrong that I am going to have a very expensive paperweight. I am considering selling it while I can.

Does anyone know where I can get it serviced? Parts availability?