I have one of the Bender glass bowl releasers that I have been using for 3 years now. It has never been the most reliable but this year I just can't get it to work good. It will dump, but then struggles to close the check valve afterwards. I have 2 of the 3/4" brass colored flapper check valves from Home Depot - one in the mainline just before the releaser and the other off the bottom of the releaser dumping into the tank. The one dumping into the tank is not vertical because I have an elbow before it. I have tried both 45 deg and 90 deg elbows. The 90 deg that makes the valve horizontal seems to work worse than the 45, which does not make sense to me. Also I can play around with how much weight is on the shaft above the float with no luck there either. This is all at about 12 - 15 in Hg. I am getting frustrated fighting this thing year after year and looking to see if anyone has similar issues or fixes?

How much weight do you put on the float?
What type of check valves and where?
Anything else i'm missing?