I know...I know...I have read all the posts, I am one of the unlucky ones. I had a 5/16" unit and went to the aftermarket 3/8". I bought two new Mopar gaskets and the fuel ring wrench to make it simpler.

I crawled underneath today to check the unit and sure enough the O-gasket was rippled at the top and sticking out past the flange. I removed it (the chinese one came out) the Mopar one went back in. I tighten it down and the same thing is happening. Ripple at the 12 o'clock.

I'll try to oil it up a little and hopefully pass the problem but...is there any sealant I can put on it to make a more snug fit? Form-a-Gasket? I dont think its fuel inert.

I am going to try to straighten the pickup tube UP a little, might be hitting the bottom of the tank and causing the flange to sit incorrectly.

Any ideas?