Ahoy all! It is I here again with another nit picky question about Hammer. In the past I've been making rooms and sometimes I go to make a whole wall, so I do, but the texture turns out stretched or huge and not very pretty. How can I fix this? Thanks!

There's a button for that in hammer! It's called texture lock and it's awesome.
Look for the button "tl" on the top bar in hammer and make sure it is ticked. That should fix your problem.

You really want to turn off texture scaling lock (it's next to the other scaling lock, it looks like "<tl>"). That makes it so if you stretch brushes they will keep the original scaling (0.25,0.25).

Thank you guys so much for posting this