Welcome, back!
I'm just about sure I'm leaving HO now. I'm staring at it as I type. Wonderfully running equipment, but it has become so "fiddly" to me. I recently went to replace the decoder in a friends beautiful Rapido diesel ... I broke just about every detail on it trying to get the body off. I break lots of little stuff now. Enough.
I've had a little narrow O scale switching layout at home, just to play with sometimes. Time to sell the HO equipment and expand the O.
Ozone.
Happy railroading.