i just bought a coleman DA sander and its such a pos. it says it only uses 6@90 psi and my air compressor puts out 5.8@90. in like 15-20 seconds the air compressor kicks in again and never shuts off and about minute or so the tank is so empty. i think that the rating on the DA sander is totally wrong. somtimes when u press the triger it doesnt do nothing gota turn the sanding disk a bit by hand to get it going. while sanding it spews oil all over, i just put in 2-3 drops like the manual says. im gona take it back and try somthing else