I have a beer fermenting with 1318. It started at 1.075 and is supposed to finish near 1.021. However it has stuck at 1.036, can I repitch another package of 1318 or just let it go?
Repitching yeast won't do you any good, you've already got plenty in there. 1318 can floc early sometimes so rousing the yeast can help. If anything I'd pitch a pack of US-05 or something similar if you have any available.
What temperature? Swirl and raise temp would be the first things I would do (well, since I have a conical I would probably take the yeast off the bottom and put it back on top).
Giving it a good shake for it going some but it died out again at 1.029. So from 1.075-1.029. Do I settle at that when target was 1.021 or do I pitch the Safale-05?
US-05 might help a bit if there actually is anything left to munch on. It definitely won't hurt the beer though. If that doesn't do anything I say just package it and see what the final product is like.