impaction often takes some time to turn into a serious problem, not always however, I've seen many young beardies with prolapse (one potential consequence of impaction) because of inadequate temps and a diet of nothing but insects.
gavin is correct, unless you are measuring the right temperature, you cannot be sure of anything - an IR gun is the best way, or a metal probe type
the fact your cool end temps are so high, suggests to me that the enclosure is too small (as I indicated earlier) - inadequate thermal gradient is also a significant risk factor for serious impaction...I don't mean a bit of constipation, but long term serious health problems - a bigger enclosure, and proper temp monitoring will solve that
I don't agree regarding the 80/20 diet, I know that young beardies can be fussy about eating their greens, but that's not a good reason to reduce their intake in the long run - good gutloading of the insects is a medium term solution tho, until they can be persuaded to eat properly...but only with a good temp gradient, otherwise dehydration will occour, and impaction will follow along with a host of other problems
The cool end of my Viv is not to high, ranging from 24 to 28. He also has a big piece of bark tube to go into to be cooler should he chose to. Unlike the OB, my heat source is outside of the vivarium, I also have vents in my viv to aid air flow.
My beardie is offered plenty of fresh greens every day, and is encouraged to eat them which he does, but always leaves plenty. The insects he is fed are all gut loaded to begin with but he is never offered too many that he won't eat his veg, as I try to make sure his diet is balanced as far as I am able to. And as for hydration, he has plenty of water, which he sits in regularly, and once a week he's given a bath for 20-30 mins so he can have a swim and get rid of anything stuck to him.
Whilst I am new to beardies, and learning, I'm also not a novice at reptiles. I watch my animals to see how they are reacting to their environment, I also do as much research as I can, wether it be through books (of which I have 2 for dragons) or internet forums (of which I'm a member of 2) and facebook groups (again a member of 2), I also talk to pet shops where I get my foods from (2 again, and one of them is a moderator on this forum). I'm also not that young, so try to be as responsible as possible.
My beardies standard of life since I rescued him has improved. His Viv has been made bigger internally (removing stupid stuff that vivexotic put in) and more natural. It is going to be made even more natural, by going full bio in the next week or so with planted greens he will be able to munch on as well as custodians etc.