Can you run your locker off one of those co2 tanks? Might be more simple just to get one of those? Sorry if its off topic. Or another thing is the new motors on the some compressors are oiless put out a ton more output and are the size of vcr. I dont know if you can buy the compressor motor by itself.
i run my arb on CO2 its been about 5 years and i still have a good bit of co2 in the tank. i like the co2 because it cant fail other then notkeeping it filled