Need advice cracked manifold and speed wobble under acleration in 3/4 gear

[psyfi_1]

Right so first and second gears aceleration is fine but as soon as your in 3 or 4 and pull the throttle doesnt seem to have power and then handle bars start to wobble like crazy                                                           




can just having the intake manifold craked all way through do this i have order new manifold boots but does the wobble come from engine jumping about under bad compression


any adice would be great