When placing a T of redstone, and the repeater at the top of the T, the signal is not read, even when the redstone appears to branch out a bit to the reader.

Shots are Here

I fixed all the cases, except for the reader that is placed on top of a repeater, because you could argue that the redstone value is encapsulated in the repeater there, and is not meant to be read from that side.

Thank you, and good job!