Our RFE was about missing "court and police records" due to a speeding ticket that unfortunately had a fine of over $500 ($573 to be precise - so barely).
We have disclosed this and the circumstances on our form in Part 3, 4.a) and 4.b) as requested.
However, only in the I-129F instructions, not on the form itself, do they state that you must also include "court certified records" in addition - we have missed this part, so this mistake is on us. I suppose we just didn't figure that they'd want something like that for a mere speeding ticket.
We have responded to the RFE with a certified copy of the electronic record search of the Traffic/Minor offense court that outlines the offense and disposition (paid + closed) of the case, we hope this will be sufficient.