I did post the replay for Tame 20 a while back on the Lemmings File Archive.
here.
You'd have to ask ClamSpammer for Tame 13, although I think it's based on the same concept as Tame 20.
I just took a look and it looks like those thin red pillars on the left are just wide and short enough to allow you to create enough 6-pixel steps to get up from them. [edit: never mind, I can't do math apparently] When I first did Tame 20 back on the old old forums, there was no Lemmix, so I wasn't particularly kin on trying Tame 13 even though I expected it to work with 1 or 2 builders.