Update: everything prints great now. had previous issue of missing supports on the Z axis cover but designer has fixed that. thanks!
I wound up using a negative part modifier on the X axis cover to delete the little lip. This allowed me to place the cover on from above because I didn’t have enough room on the left of my printer to slide the cover on.
They fit perfectly. I had a problem with the Z piece, The supports felt down and it didn’t finish to print, but it was one of my first printings and I’m sure I did something wrong. Anywhere I can use it. It keeps in place. Thanks.