Hi Ray, are you using a temp gun to take your readings?
With pipes, they can be very misleading. I suspect you are getting higher temps than that.
However, until the internal gas temperature exceeds 130°F, condensation is an issue.
Yes, your cob can take quite a while to dry out, and it will leak water in low spots until it does.
For internal pipe temperatures, I have a similar unit to this one.
https://www.amazon.com/dp/B071V7T6TZ/ref=sspa_dk_detail_7?sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw
Very easy to install (drill a 1/16" hole) and reasonably priced. I find it invaluable in shoulder seasons, when the mass is cool.