There is a meta-thread on MO Interesting and not sufficiently answered questions on math.se whose purpose is to draw attention to questions here.

Posting there is an intermediate solution between reposting on MO and doing nothing.

That said, I saw in a recent case you only waited two days or so. I feel this is a bit on the short side for a wait-time, for more specialized questions.

The standards for questions on MO and here diverge ever more (in some aspects MO is meanwhile more tolerant). What usually helps on MO is that you explain the (research) context in which your question arose. Don't be verbose about it, but still give a brief indication. However, your own attempts and alike are not really needed on MO. You can paraphrase your thinking, and this can be good, but rather do not include details of failed attempts.

There is a meta-thread on MO Interesting and not sufficiently answered questions on math.se whose purpose is to draw attention to questions here.

Posting there is an intermediate solution between reposting on MO and doing nothing.

That said, I saw in a recent case you only waited two days or so. I feel this is a bit on the short side for a wait-time, for more specialized questions.

The standards for questions on MO and here diverge ever more (in some aspects MO is meanwhile more tolerant). What usually helps on MO is that you explain the (research) context in which your question arose. Don't be verbose about it, but still give a brief indication. However, your own attempts and alike are not really needed on MO. You can paraphrase your thinking, and this can be good, but rather do not include details of failed attempts.