Out of curiosity, did you ever spend much time reading the code of the various frameworks on offer? Especially since you have the experience of building everything from scratch, I think you could have the same level of understanding of any frameworks you put together by browsing the code.

In Rails land at least, a lot of relatively inexperienced developers tend to have trouble when they can't google for the thing they want to implement or find it in the docs. I find that if I open up the source in roughly the area in which I need to implement something, a hook point is provided at about the right level of abstraction. Your mileage with other frameworks/environments may vary.