i wouldnt sweat it
I have had those mounted on the trucks I supply my crews at work and they have held up to that abuse, and let me tell you those ******** try their damndest to screw up every piece of equipment we have.
Mine differ a little bit because they came mounted on a 3gal tank but its the exact same compressor
Those compressors are holding up after the silt beds near Pecos TX weekly and also a few of them are mounted in the bed open to all elements and after 2 yrs of service they are holding up. Only ones I had to replace were damaged by stuff in the bed sliding into or landing on it.
I really like these alot and they are tough lil boogers
That makes me feel a lot better about it. In that case, I'll probably go ahead and finish mounting it.