[slime-devel] Indentation modes

I'm trying to diagnose why my slime setup sometimes indents 'WITH' and other macros correctly, and other times indents them too far to the right. If I edit the file in lisp mode, it often doesn't work, but in slime mode, it usually does, depending on if I loaded the file before or after slime mode was running. At least I think that's correct. What variables or settings can I track down to figure out why lisp mode and slime mode are not indenting the same way?