Refractory cement

Josh sounds like a total rebuild you have tried the re caulk routine and it has failed . My suggestion is to find a leg for that Encore and install it and scrap that stove.
Chalk it up to a learning experience. Sometimes there is a reason old stove should be retired

Josh, you probably used the product correctly but in case you didn't. There are different types, brands of the cement. Most I have worked with neede to be cured a specific way. I like to clean the surface very well from and residue. Use the product. Let is setup. Then do a small, light firing. Tehn let it cool down completely. Then fire hotter. Cool again. Then fire hotter yet. Let cool. Then you should be good to go.
I have seen some ust put it on and fire up full, usually not a good idea.
Also if you can get to both sides of the void use the cement on both sides getting it to bond to itseld also, this tends to help alot.
BTW was this premixed or did you mix it?

I agree with elk. If you have the peices for the leg and can't find one try some JB weld. I've use this for all kinds of repairs from boats to wheelbarrows. I think there is a jb weld for high heat apps. Or if the barren smokes that much and on a non combustable
surface you could stick a brick under that leg till one could be found.
The point being you should not be running that barren in it current condition.

Jay