My Friend's OU Shoddy Team

[Gengarchomp]

This is the team of a friend of mine who let me try it on Shoddy. It does extremely well, but it has trouble with Scarftran, Stalling, Baton Passers, and sometimes Garchomp. It also has trouble making any sort of come back because it has no fast Sweeper.

Yanmega@Wise Glasses
Speed Boost
Modest
4 HP / 252 Spa / 252 Spe
Bug Buzz
Air Slash
Hypnosis
Protect

Yanmega usually is able to take out at least one Pokemon when used carefully, and it has helped 6-0 opponents countless times. It is responsible for more defeated Pokemon than any other on the team.

Blissey@Leftovers
Bold
252 HP / 252 Def / 4 Spa
Aromatherapy
Softboiled
Seismic Toss
Thunder Wave

Blissey is obviously the Special Wall of the team. I'm not sure about the EV spread though.

Gliscor@Leftovers
Impish
Hyper Cutter/Sand Veil
252 HP / 4 Atk / 252 Def
Earthquake
Taunt
Roost
Aerial Ace

My friend and I can't decide which Ability would be better for it: I say Sand Veil, he says Hyper Cutter. Which would be better? Also, Aerial Ace is for Breloom and Heracross.

Starmie@Leftovers
Timid
160 HP / 136 Spa / 214 Spe
Thunderbolt
Surf
Rapid Spin
Recover

The team's best chance against Scarftran, but it has trouble switching into its attacks.

Jirachi@Leftovers
Impish
240 HP / 56 Atk / 76 Def / 136 Spe
Zen Headbutt
Stealth Rock
U-turn
Wish

It is a very supportive team healer. It works phenominally well with Salamence, since Jirachi resists Ice and Dragon, while Salamence is immune to Ground and resists Fire. It is also the closest thing to a Physical Sweeper on the team.

Salamence@Life Orb
Mild
120 Atk / 252 Spa / 136 Spe
Brick Break
Draco Meteor
Flamethrower
Crunch

My favorite thing about this team is the symbiosis between Jirachi and Salamence. Roost isn't used because Jirachi can cover for it with Wish and U-turn.

Last I checked, our record with this team was 33-4. Please tell me how we can make this team better.