Loud grinding noise after homing

I fired up my x50 so i could scribe for the waste board.the machine was home but i accidentally hit home the machine. it started making noises trying to move in x direction. i had to hit e stop when it wouldn’t stop. now it makes a grinding noise on left side when i move in x direction. the noise is only for the first 2 inches then its fine. does this whether i’m going left to right or back right to left.but only on the left side of machine.it didn’t do this before i homed the machine from home position. I’ve seen some post about checking the blue wire or tightening the coupler or something like that. will look at these after work today. Anyone have any ideas? thanks