Baro Damper Problem

Hello Everyone,
This is my first year using a RC type baro. Previously I used the cheaper style with the weight on the inside that you pick up at most hardware stores. So far the RC seems to have a much finer control and more fluid like movements. So I like that it is more responsive. The thing I don't like is twice it has jammed open. I went to check the stove before going to bed and the baro is wide open for no reason, I tap the flap and it shuts instantly. That is the other thing it will only jam wide open. So what is up, has anyone else had this problem? The problem appears to be on the side of the flap that it might be a little rough and it hangs up in the hole where the pins for the flap come through. I thought about pulling the pins for the flap out so I can grind it down a little, but then I was concerned that the pins might not want to stay and would walk out over time. My cousin and I both picked up our baros at the same time and his is doing the same thing.

Has anyone come across this before of modified their baro so this doesn't happen? Any help would be appreciated, thanks in advance.
Have a great weekend everyone, Eric

You can pull the pin out and file down the rough edge so it will not get hung up. I had the flap off my RC a few time and the pin is still good and tite.

Check to make sure the pipe is not oval shaped that it is mounted in and clean up the edges of the flapper with a file if possible, make sure it's level and put a couple drops of oil on the pins that it pivots on. Check the LImit Tab, maybe bend it a bit if that is what is catching...etc...

Check the LImit Tab, maybe bend it a bit if that is what is catching...etc...

I had that problem with mine. Bent the limit tab, it's been OK since,

Thanks everyone, I have alredy bent the limit tab and it was still doing it. I can see the rough edge, so I know I need to file it down and thank you razzler that was what I had hoped to hear. I will pull the pins and file it down.
Thanks again, Eric

Yup, had to the same thing, You can take the damper out just by removing one pin, the one on the opposite side of the damper stop. I used the grinder and just touched it a little bit.

I had a problem with the baro on my oil boiler sticking. There was a burr on the edge of the "flap" that had to be filed off. Once it got it working real smooth it stuck closed...apparently when the burner fired just right the damper would bang closed and the "flap" would get caught on outer ring. Solution: I put a self-tapping screw through the outer ring of the damper to act as a stop, it has worked beautifully since then.