I'm no fan of yellow jackets, or any other relative of bees personally.
Watch out for the wire slipping down in wcr relay those are FUN.....
Also the little plastic pieces that go around coils do get brittle and will cause you grief as well,
Here is a hint as well, put a change date on those with magic maker
After year or so I change them out.... Less trouble
And lest I forget the brass sleeve on 14/15 switches on composites....
For the new guys