If the old one had a melt down then yeah a lot of digging and filing to open up the pocket/groove, plus the dried glue to contend with, not a hard job, but time consuming
Ok where's a good place to get the switch and are they aftermarket or Chrysler
Some substitute the Ford switch which will require mods to use, www.early-birds.ca has a repro switch for the 70-1 mopar B/E steering wheel, IIRC it's about $60