X axis stops at certain point?

I am running basic testing of wiring and when i go to the right it stops at a certain point. i checked for obstructions. https:/uploads/inventables/original/3X/4/4/4425a1438526f0d6c5a3b431131196abef878269.MOV

no actually i had a bolt tight and it just wouldnt let the x axis go past a point