Just got it home and the boom slams down (hard) when pedal is pushed all the way. Is the an adjustment for this anywhere. Also appears that there are pads missing from brackets where the arms rest. Are there supposed to be pads there? I know the obvious answer, don't push the pedal down all the way. But it seems to have a stiff spot in it which gives it two speeds, slow and super mega ultra fast. Thanks Guys.