When the transmission is shifted into reverse, it wants to drive forward?

Yep, the valve is stuck inside the valve body which is common when you change the shift solenoids because deburrs get dislodged and can float into the valve area causing the valves to stick, or you have defective or the wrong part installed. Here is how to remove the valve body so you can check the valve movement and clean it if necessary. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.