New helium retention work suggests young earth and accelerated decay

I have been lurking here and believe I have read most of the posts. Several things about Humphreys' experiments really puzzle me. Correct me if I am wrong, this is not my area of expertise.The Helium diffusion studies were done in the lab, correct? Was it possible to collect the samples and do the diffusion studies without introducing variables (pressure, temperature differences, surrounding substrate) that would make any "results" meaningless?Second, why would we give more weight to helium diffusion results than to the amount of lead found in the samples when it seems to me that the quantity of lead in the samples is going to be much more stable (not subject to diffusion in or out) and thus a much better indicator of age. As for the "accelerated decay rates" of uranium, 1)why hasn't this been observed elsewhere? 2)wouldn't this "show up" in the proportional amounts of intermediate decay products? 3)why invoke a miracle when the age determined by the decay rates is a tested method while helium diffusion rates is a novel and untested method?Third - Reading several critiques of Humphrey's "work", it seems that the calculations of the He diffusion rates are highly suspect, to say the least. Shouldn't he be able to publish this part in a reputable journal if everything is on the "up and up"?

TB you have not answered this question of mine:"3)why invoke a miracle when the age determined by the decay rates is a tested method while helium diffusion rates is a novel and untested method?"In other words, to accept your position, you need to throw out accepted science (radioactive isotope decay)in favor of a novel untested method subject to many variables (He diffusion rates). What would be the logic of that? The whole thing reminds me of the "moon dust" and "population growth" arguments promoted by some YECs. Ad hoc arguments that ignore basic physics, chemistry, geology and/or biology are the reason why YECs have so much trouble getting taken seriously by mainstream science imo.