hello!
Guy buys a primered, incomplete running rod and has issues. Sounds like he doesn't have the bucks to do a complete rebuild all at once.

First, the steering issue means you shouldn't even drive it on the streets. Let us know if it's a steering box with linkage or a rack and pinion setup. Pictures would be nice.

Next, inspect every inch of the frame, drivetrain, brake system and wiring. Look at the welds, the way things are put together and for any loose, leaking cut up or rusty parts. It sounds like someone didn't have a level of workmanship that you should trust your life with.
We can help, just take it a step at a time.