Gun's Animation "Teleports" You & Plays Over Default Walking Animation

I’m new to this whole animating tools thing so I’ll probably encounter a few other issues too, but for now I’m focused on getting an idle animation working. So basically I’ve got a weapon and upon equipping it the first time it will teleport you to the dummy rig. Attempting to move with the gun is incredibly awkward as there is no walking animation and it appears as if your being “pulled” from the torso. I’m not really sure what to do, I played around with the animation priorities and that didn’t really affect it that much so I’m at a loss.

You can see it here, 2 - Roblox

EDIT: Well… I fixed the teleporting (mostly) but equipping the gun still jerks the player around for a second and the walking is back but it… has noticeable issues.