1a. Kick the bucket, cutting end of lobster's tail off
DECREASE
I sort of get the parse...DECEASE+R, but the clue reads as though an "R" should be removed.
15a. Parts left off playground items
SIDES
Again, I sort of get the parse (SLIDES minus "L"), but how does 'Parts' mean 'Sides'?
Parses for the above please.