T-4RSS 4U - 4 Space Amp Rack - Road Gig Ready Flight Case

I actually bought 4 of these amp racks. The case is solid and well put together, the fit and finish is good. Now for the BUT and it is a small design flaw... the ball corners hit before the rubber feet, they are only stackable after the covers are removed. You can NOT stack the racks on a dolly or in the truck with the end covers on unless they are off center a small amount. They slide on the corners. They could have fixed this by using 1/4" to 3/8" taller feet or by using the stackable balls on the corners. They can be fixed by buying 1/4" to 3/8" thick nylon washers and longer bolts or by buying taller feet, however when buying taller feet be sure the hole is big enough, and you may need longer bolts to get to the captured T nuts in the case. Good case, I have to say a great case even with the issue. I did email the company, they got back to me very quickly and acknowledged my concerns. It shows they are dedicated to their product and customers. I added a star after their communication. I gave it 5 stars, for the price I put taller feet on with longer bolts. You can use it as is, I just need it perfect so I did a little work on it. The lids fit great, the amps fit without issue, it is very solid. I have a couple of QSC 4050 amps, they are heavy. The cases handle them well.