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Paula and I did our first winterization of "The Swallow", hull 509, today and had some issues with drawing in the RV antifreeze from the winterization/boondocking port. We were following the printed list and the video that is on the Oliver website. We made sure that our water tank and grey tank was empty. During this process, I did open the kitchen and bathroom faucets, and tilted the trailer to speed the process. We had previously done the Truma so we only had to orient the valves for the winterization so that all the valves pointed to the rear of the trailer. We placed the 3 foot hose connected to the boonndocking/winterization port and turned the pump on. After a brief flow of water, we had spits and starts of foam and RV fluid, but no steady stream and the draw from the RV gallon bottle was very slow. We tried doing the kitchen and the bathroom to the same result. We did orient the hose in the RV antifreeze with some benefit, but it wasn't until we disconnected the hose at the boondocking/winterization port did we get substantially more RV fluid at the faucets. I suspected an air lock at the pump initially and eventually checked the screen in the strainer, but even though we found some bits of plastic, it didn't correct the issue immediately. We fiddled and fumbled taking time to stop the pump frequently. We eventually did get a better flow, but it took some time. Can anyone advise us as to what is normal for the winterization process? I suspect that by draining the water from the faucets too soon that I may have created the airlock.