Stan , manufactured products always need attention. We are talking about mating plastic with various types of metal and moving parts with variants of temp ,humidity , voltage ,vibration of electrical machines rolling over them , electrical residue , etc., all making for an interesting mix. You have to fine tune these things with files and hammers and an armament of knowledge from the FORUM.
I had a dream last night ........,the 5' by 20 ' layout becoming a 400 ft. continuous loop with 100 non lit lock ons and some kind of brick arraignment. Only a half dozen engines to fine tune and a couple of LED lit passenger cars.
Only fun in dreams. 😴
