Help with 2014 VGC Rain Team

#1
So I've been working on a rain team. It's done okay on battlespot and showdown. The team definitely needs more physical attackers but I don't really have any ideas. I would be okay with using just half a rain team. Right now I lose to trick-room teams, Amoongus and mega kangaskhan. Any ideas or recommendations would be awesome. Thanks.

Tesla (Manectric) (M) @ Manectite
Ability: Lightningrod
Shiny: Yes
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
IVs: 30 Spd
- Thunder
- Volt Switch
- Overheat
- Hidden Power

Amphibian (Politoed) (M) @ Eject Button
Ability: Drizzle
EVs: 252 Def / 252 HP
Calm Nature
- Endeavor
- Scald
- Ice Beam
- Focus Blast

WhoNeedsDNite (Kingdra) (M) @ Life Orb
Ability: Swift Swim
EVs: 252 Spd / 252 SAtk / 4 SDef
Modest Nature
- Muddy Water
- Hydro Pump
- Ice Beam
- Dragon Pulse

MegaScyther (Scizor) (M) @ Leftovers
Ability: Technician
EVs: 252 Def / 252 HP / 4 Atk
Adamant Nature
- Bullet Punch
- U-turn
- Brick Break
- Protect

CarKeys (Klefki) (M) @ Focus Sash
Ability: Prankster
Shiny: Yes
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Rain Dance
- Draining Kiss
- Thunder Wave
- Reflect

Kohler (Rotom-Wash) @ Sitrus Berry
Ability: Levitate
EVs: 252 SAtk / 252 HP / 4 SDef
Modest Nature
- Hydro Pump
- Volt Switch
- Rain Dance
- Dark Pulse

Klefki is almost never used and rotom seems a bit redundant with the politoed kingdra and manectric. I love using manectric and anything to help him is cool. Kingdra definitely sweeps lots of things but after it dies manectric struggles.
 
#2
If you feel that your klefki is underused, switch it up for a different support pokemon that does better in rain (i.e. amoonguss)

Also, your rotom-w, and politoed sets are a bit off.

Rotom-W's best set is Light Screen/Hydro Pump/Thunder(bolt)/Will-o-Wisp

Politoed can work with
-Hydro pump
-Ice beam
-Protect
-Focus Blast/Perish song

Overall, your team looks like a very solid rain team that players will have a tough time defeating.

Hope the set advice helped!