4 speed slipping out of second gear

@erafuse

First and foremost I am far from being a transmission expert. He'll I'm far from being an expert of anything, car related.
(My posts are proof of that...)
I ask more questions and for help than a sinner at confession.
Ask me about my work and Bulldogs (what mainstream America refers to as Pit Bulls) and I can honestly answer you with a hint of confidence that I know what I'm talking about) but cars, N-ah..

But ..... Repeat. But, I think I can answer this with some bravado. I had the same problem when I was in second and at high rpms and would just let go (deceleration) and coast, even if the car was going downhill and still winding, all of a sudden it would pop out of gear.
Didn't think much as it wasn't a problem. I had the shifter changed and while they were doing that they realized I was also low on fluids. So it was filled and off I went but I started to realise that after a few days of driving, especially going downhill with the car winding like crazy, I was worrying it will pop out of gear, it was not happening.... Hasn't happened all yr and there is no leak. So it was the the low level.
With that said,. Make sure your tranny level is where it's supposed to be, no leaks before you do anything else. Then check other things ....but it was as simple as that for me for that issue.
I actually tried to make it pop to be honest, I would routinely do it over and over to see maybe I wasn't going fast enough, maybe I had only driven 5-10 mins that day, not hot enough, or didn't drive long enough and try it like that. Nothing to it. It's in gear and not coming out.

Hope this helps I'd like to know if it helps you out too.