The New England Patriots don’t have too many things to work on after improving to 5-1 with a 35-17 win over the Cincinnati Bengals on Sunday, but one big issue stands out. The Pats’ defense has had a rough time on third down this season, allowing opponents to convert 44 percent of the time, which is good for sixth-worst in the NFL. Hear more from former Patriots tight end Jermaine Wiggins on the topic in the video from “NESN Sports Today,” presented by People’s United Bank, above. ... NESN.com