Hey, someone else is paying attention
Having watched #143 and #144 now, I can confirm with reasonable confidence that the 66 recorded in #142 is the lowest score recorded.
I also watched #10, which had the 206 rolled by Greg Morris and John Beradino, which stood as the top score before #70 when Michael Cole and Tige Andrews scored 266 and won the car easily.
Enough for me to start a "Notable Scores" section in the Wikipedia page for the show, thus confirming that I have too much time on my hands.
I think all of the posts from MeTV for the week of 1/5/2015 were all "reruns" (previously posted eps) since I remember some of the jokes, for example, Jed's saying that "If a team scores 210 or better, we will launch an investigation" and Gary Owens quipping that the sixth frame bowled off camera was "also bowled in the nude."