Have you ever put on a new chain and cassette only to find that it still skips? It's best to eliminate all the other potential causes beforehand. And, what's the big deal? Adjusting the stops takes a few minutes.
Originally Posted by
Homebrew01
There was no indication that the derailleur is out of adjustment. Adjusting the stops is more likely to cause problems than solve them, unless the OP is specifically having trouble getting into the high or low gears.