[slime-devel] Question about useage

This is probably a dumb question, but I haven't been able to figure it out yet. If I'm working with Slime and have defined some method functions for CLOS objects and want to change the number of arguments, when I go to compile one it objects with something like:

"Attempt to add the method #<Standard-Method LIST-PARMS (TRACK-CLASS) {48BAC95D}> to the generic function #<Standard-Generic-Function LIST-PARMS (6) {484A09A1}>."

I knew that. I was trying to change them all. Is there a way to clear the existence of these functions from lisp's "memory" and start over? Or do I have to kill the session and start it up again?

Thanks.

--Jeff