One thing I'm noticing is that Kyurem-B's mixed attacking set tears apart this team. Earth Power deals with Heatran and Galvantula, Ice Beam gets rid of Lando-T, and HP Fire deals with Scizor, and Starmie can't do too much to him. I'd recommend using either Scarf Terrakion or Azumarill to take care of this weakness.
Terrakion @ Choice Scarf
Ability: Justified
Jolly
252 Atk / 252 Spe / 4 HP
-Close Combat
-Stone Edge
-X-Scissor
-Earthquake
Azumarill @ Splash Plate/Choice Band
Ability: Huge Power
Adamant
252 Atk / 252 Spe / 4 SpD
-Aqua Jet
-Play Rough
-Waterfall
-Superpower
Terrakion can come in and revenge kill with CC or Stone Edge, and Azumarill can switch into any of Kyu-B's moves, and then KO with either Superpower or Play Rough. Now the choice of who to replace is a little more difficult. From what I can see, Scizor really isn't doing too much to help this team, as you already have a solid VoltTurn core with Lando-T and Galvantula, so I'd consider replacing Scizor with either of the two listed above.