I distinctly remember a version of the theme song where at the very end of theme when they all are standing in front of the house & then start walking away, there's one version where Mike leaves the baby carriage by accident & then runs back to get it..........I remember this vividly but I can't find that version anywhere!

That does sound familiar to me. It would have been done in a flash, but I can picture it in my mind.

I believe that version of the Growing Pains intro is from the season when baby Chrissy makes her debut. I tried searching for that intro in my Growing Pains DVD but couldn't find it today
Hope this info helps you very much Angeleen
Bestie