Blue is normal. Excessive is not, that means your running pretty hot.
Rust happens. You can prob get it off with some steel wool. If you won't want rust you have to spray it down with WD-40 when your all sone
I would be surprised if Jeff ported them at that size. You better take care if that's the size. Would suck to lose that because of something stupid like a cross over tube or a rotted intake leaking.
Get rid of that fucking tors. Your not pulling because your not making power. Either your not fucking beating the piss out of it, or your jetting is off.
Buy a tors removal kit, do a plug chop.
Those rubber bands are junk. You don't need them.