If you mean from top to bottom it's okay, but left->right is messed up, then it sounds like your Horizontal Yoke wire is swapped.
The yoke wires should connect from the yoke to a removable connector on the main chassis board.
The connector looks sort of like this (as best as ASCII art can do)
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If the colors used are the same as industry standard, they should be in this order, per the above picture:
Brown White Grey Red
If the connector doesn't have a wider pin at the right, it may have the following colors:
Red Blue Yellow Green
You need to swap White/Red wires (first connector) or Blue/Red (second connectors to reverse the way horizontal is drawn.
A VERY COMPLETE description of this, the dangers (NEVER mismatch the connectors if you're not sure, you will end up frying the yoke or board or something else more important (you) if you dont know what you're doing), read the following page at TheRealBobRoberts.Com
http://www.dameon.net/BBBB/yoke.html