Have a few tanks if any interest you.
I have a couple of Nitroduck 113/4500s just rehydro'd.
Both tank regs have some leaks but of course not looking for top dollar for either or both.
Also have a 68/4500 PE Tank. Top pin sometimes doesn't want to seal properly but just a nudge usually gets it to. Tank has also just been rehydro'd. Unfortunately don't have enough pressure in it to see what its putting out but if I had to guess I'd say 850psi.
Let me know if interested in any of them!