Keith, the only thing I'd now add to my detailed post above concerns draining the tank. I've found that after the initial dump of the tank that it's not completely drained; at least, not to my satisfaction, anyway. Now I dump, then quickly tip & dump the tank a couple of times. Other than that, I've not really had any of the issues I've seen reported. I did, one time, think I may have noticed a very faint line from one of the holders (this is, most likely, the most common reported issue) so I straightened both and all has been fine so far.