I purchased the Mistking Ultimate system and started to mount the nozzles and assemble the system.....turned it on and almost every fitting was leaking! All tubing was cut clean and I thought tubing was seated properly in each fitting. I emailed Marty on Friday night and he got back with me in minutes! When assembling all of the fittings the tubing seats and feels secure, but it isn\\\'t. With a fair amount of force you will feel the tubing seat, click and seal! This system works great, is easy to assemble, does an excellent job with great product support! I highly recommend it.