Dennis said something very important, the problems occur when the releasers were out in the open uncovered. I have had my bernard single for 2 years now and have never had a problem with a float sticking or any type of hang up. It seems that everyone with releaser problems no matter the brand have them outside uncovered. My releaser is on my tank outside but I built a cover for it out of a plastic trash can. It keeps the weather off the important parts and seems to help with the reliability.
Kinney KS-15 High Vac with Bernard Single Releaser
Leader 2x6 Patriot raised flue
Leader 2x4 Steamaway
MES Dolly 300 3 post RO
Sheets 5" Filter Press with air pump
and still lookin to get bigger