After a fresh rebuild in my beat 700r4, My buddy and I came across an issue. Initially we were having some difficulty with getting the trans to shift out of first to second, but everything else was working ok. A trip in the freeway and it went into all gears. After parking it, when we went to move it, it’s stuck in drive. It goes into drive in every gear, including park. When shifted to reverse, it'll move back a few feet then feel like it’s stuck, as if something is blocking the wheels. Any suggestions? Pulled the pan off and all linkages are intact. Reverse was working ok on first test drive