11 34 Cassette

Dropped the bike off tonight again to get the chain slipping fixed.  I sat down with bike mechanic and we examined chain and cassette. The chain was stretched big time and the cassette was extremely worn out.  Ordered new cassette and chain; going to go with a slightly different cassette.  Stock cassette was 11 28, I am moving to a 11 34!  Should make those hills a lot easier!