If I park nose up or on flat ground with my new transmission starter doesn’t engage but if l park nose down it starts every time

What is your question?

Linkage has been rebuilt, new starter, ignition switch, accuator pin, battery .the only way to get it started is holding the key in the start position and rocking the car back and forth

What makes this problem better or worse?

Parking nose up on a hill

How long has your 2005 Dodge Magnum had this problem?

Since new transmission was installed