Clear lines on custom models

I taught myself how to make custom models for resource packs, but there are clear lines on some of the edges of blocks I place. I am pretty sure it happens because there is transparency in the part of the texture next to where it ends.

I have a picture and the resource pack. I have fixed it for doors and ladders, so beds are the only messed up ones right now. Although it is fixable, the way I fix it makes it only work with the default textures.

It is almost undetectable in the picture of the bed I attached (It's on the legs), but when you move around, they flicker, which is really distracting.