you have a bad head clog.
first you need to clean the video heads with some pure alcohol and chamois. chances are that if tape spilled into the machine, it picked up grease off the deck and smeared it onto the heads.
while in there, remove any of those stupid 'auto head cleaner' devices , they just replace the dirt back onto the heads after a while!
try also replacing the pinch roller, this can cause all sorts of tracking problems and wrinkle the tape edges.
if none of thaat works the heads may have been damaged.
romko
February 2007