Blender Animation to UE4 problems

Having trouble importing this animation from Blender to Unreal 4.26. I’m using an FK Rig that is pretty advanced and, there seems to be a problem with transferring it over to Unreal. The animation seems fine in Blender but in Unreal, the leg twitches. That looks like the only problem with the animation which is pretty weird! I’ve been troubleshooting for a while now, I’ve baked the animation in Blender, played around with the FBX import animation settings in Unreal and, I’ve tried just about every option when exporting the FBX out of Blender. Would love it if anyone could help me out thanks! I’ve attached the screen record of the animation of how it looks in Blender and Unreal.