They did validate Fleischmann Pons on a regular basis. Roughly 17,000 times according to a grad student at the Institute of High Energy Physics, Chinese Academy of Sciences, at 180 labs according to Ed Storms. (Not me. I didn't count 'em.)
They are not replicating on a regular basis now because they are dead. Of old age.
Nope. No skeptic has ever found any problem with the calorimetry in any mainstream study. They have looked, but they found nothing. I am sure you would not find anything if you were to read the literature, which I am equally sure you will not do.
17,000 times?! That would mean we should all be powering our homes with palladium based fusion reactors in our basements. We know this is not happening so someone got something wrong here.
I'm not a calorimeter expert. Mary Yugo is though [identifying suppositions omitted ...]. Mary has identified numerous shortcomings of the calorimetry methods used by P&F and Rossi as well. IIRC Mary has raised concerns about the probe locations and insertion methodology.
Hoping Mary will comment on this thread to elaborate on her concerns.
Please respect the anonymity of people who wish to remain anonymous. Eric