Thanks for all your advice. Due to what you said T_S, you've made an excellent point about Sludge Bomb, it's more likely to help seeing as I won't be up against any Garchomps with it. Thanks for that, I'll change it back. :)
About Alakazam, should I change it from a TrickSpecs set to an all-out special sweeping Zammy set?
If Flamethrower, can still 2HKO Skarm and OHKO Forry, then I'll definitely go for that. Such a better option.
It's a real shame about Registeel, I really like it and used my Ruby Masterball on it. Yeah, I know, I'm lazy. :P Hmm, I'll try and come up with an effective alternative, so I can see which is best between the 2.