Is it quite evident that old has been omitted in the first line. Rowe, who is followed, prefixed it to the first 'news.' I think it is better with the second, as in Collier's folio.
"Often burst, and now's repaired with knots."
"And 'The Humours of forty Fancies.'"
Collier's folio reads "The Amours or forty Fancies."
"Were it not better I should rush in thus...."
Sense and metre demand the negative. There is, I think, a break in sense at the end of the line.