Having worked on compressor maintenance for a few years, compressors can be a real pain if you don't understand a few precautions that you can take to make life easier and cheaper. Duty cycle in a compressor can be either the description of the compressor capacity or the motor. Duty cycles in reference to the motor of 50% means it runs for the same amount of time as it is off but when talking of the compressor capacity you can have 100% duty cycle and the motor only runs once as the reservoir has enough reserve to enable you to perform what ever you are doing in just one fill. Having halved your reservoir capacity can lead you increasing your motor duty cycle. I hope when you decided on the new compressor capacity you took into account the CFM, cubic feet per minute, required by your spray gun as that dictates what compressors CFM capacity minimum should be. If you get that wrong then you can expect to replace the unit quicker. The pressure that is delivered still has to be taken into consideration but when spraying you normally don't run at 100 PSI and is performed at what is considered low pressure. To help reduce running time for the compressor make sure all joins are sealed with some type of sealer. The less time spent tightening joins means more time using the unit so if you can reduce the number of fittings you have to loosen each time you use the unit the better. You should be able to get by with only loosening the fitting that goes into the gun for cleaning. The fittings are generally either a sealing thread or mating face type. Mating faces are either 2 faces that are the same angle, as in compression, or a tapered face with a round mating face. Both of these types you use a sealer. Don't ever use a sealer that hardens as any movement can break the seal and compressors can generate vibration that can make a hardening sealer useless. I always use a clay based product, I use Hawkins that comes in a green can, and you only need a smear over the full face as it takes up any irregularities in the mating faces and doesn't harden. Don't go crazy with it as too much is never good. Never use Teflon tape on compression fitting threads as the threads don't seal, the mating faces do. If the faces don't seal using tape on the threads wont help. If the fittings are tapered thread type then you use Teflon tape as it takes up the space between the 2 threads. Tapered fitting are known as self sealing but I have never come across one that seals as there are always clearance on the mating parts. Never overtighten either types of join as that is worse than having them loose as you can damage the sealing faces and they will never seal without some sort of sealer and may even need to be replaced. If you use the unit with loose fittings for a length of time that can damage the seals so whenever you use the compressor make sure all the fittings are tight, never assume, and your unit will be virtually maintenance free for a longer period.