Really need more information from you. I have a 94 192 Tournament and can tell you that the hull does not track well at low speed - it is easy to over steer and zig zag. However, it is not impossible to steer as you describe. Sounds to me as though you have other issues. Is your helm a hydraulic unit? If so, it may be time to rebuild or replace the helm. If you are not familiar with the unit, you may be better off having it checked out by a mechanic as opposed to just buying parts in the hope that you get it right. Check fluid level in the helm and make sure you have no leaks. That would be a starting point. Regarding your throttle, if those are the original cables, you probably need to look at getting those replaced. In the meantime, you can look under the outboard cowling, starboard side, to see if there is anything funky going on where the cables attach to the motor. Good luck!