Long Winded Old Fart
I've noticed in your layout photo's U have some sharp curves & track that is not nailed down. No matter how much track I have laid over the years, sometimes I have trouble w/a spot that I haven't checked & doublechecked before I nail it down. You will learn(usually the hard way) that w/any kind of track you learn by mistakes. I know that sounds bad for a model railroader that is trying to do everything right the 1st time, well, it just doesn't happen that way especially if this is your 1st layout. So, just hang in there & all of us will get you on the right track. Remember, make the turns as big as possible & just maybe you won't get into a bind.