Is there a silicone or lubricant to apply to the internal O-Rings for smooth operation? I have completely cleaned out the barrel and all parts; however the O-Rings seem to be binding on the PVC barrel.
When I cleaned it last time and used white lithium grease it ended up attracting a lot of sand and silt. It was actually working worse than before I had cleaned it. As an on-river fix I just used some olive oil and it's been working great.