Well, I found a bad component, I just figured out which wires were which, figured it had to be a problem on the Horizontal Pulse, and started tracing it back. Had continuity all the way up to a small dark brown surface mount component. It is labeled with an E and I belive the number is E356 or E366 hard to read for sure. Either way, there were several of them on the board, and using an Digital Ohm Meter, they all had continuity across them except them EXCEPT the one on the H-Pulse line, and the mouse does not move left to right! Funny thing is though, these only have 2 connections, not 3, as you mentioned, unless its possible it has a connection UNDERNEATH it. Its a very small surface mount part, about the same size as all the rest. Where the heck can I buy one of these? And what exactly am I looking for? Emi filter? Is it a fuse?