Background on this unit: purchased in 2018 and used for 2-3 hrs filling a small bottle. I got back into the sport this year and the YH was working fine until it lost pressure during a long fill on a 6.8L bottle. The unit runs fine and it isn't making any noises that would lead me to believe it's a catastrophic failure. I just don't have time to mess with it and replaced it with a GX CS4 which I think is more suited longterm to fill my large bottles. Rather than donate it to Goodwill I thought someone here might want it. It can either be picked up (I'm in N. Calif.) or if someone wants to send me a Yong Heng box with a prepaid return label I will ship it back to you using either UPS or USPS. PM me if you're interested.