Help; Why does this layout not allow two trains?

[Harbor Freight]

Why can I not run two trains on this layout? I am making this coaster for a college project but the simulation does not run right if I have two trains. The first one will go up to the lift hill and then stop halfway, and the second train jut sits there and does not move into the station. This is really weird because if I switch the placement of the transfer track and the station, then the simulation works just fine. Its like nolimits is treating the lift, transfer track, and station all as one block zone. Is that normal? Is there any way to break them up?

[Ride_Op]

Those should all 3 be separate zones. Things to check:

Is there any overlap with trains starting touching two different blocks (zones)?
Are there friction tires enabled on the transfer track? Without that or a slight downward slant, the 2nd train won't move forward and the first train will stop near the top of the lift because the transfer track block is occupied.

If those tips don't help, post some screens and we'll help you figure out what to adjust.

-Ride_Op