Stunt tank Siphonic Action

I have a black widow tank that someone had butchered and pulled out the vent tube and drilled the hole larger for a hose. Not the filler tube but the vent tube pointing down. I slipped in a 1/8 aluminum pipe as a sleeve and then inserted a 3/32 tube inside that with some super glue to seal it.
It looks good but when  fill the tank the overflow/vent pipe weeps every time the fuel sloshes around it and for a few seconds when the tank is freshly filled. This is likely just a simple physics question. How to stop the vent pipe from allowing the fuel to weeps out when it sloshes by? I inserted a small plastic pipe inside the 3/32 pipe I inserted inside the 1/8" to restrict the flow. It still allows air to pass. I will try it tomorrow to see if this stops the weeping. Might the restricted vent pipe stop the weeping? I hope so.

I've run the tank/widow motor today about 5 times and because it is weeping only get 30 -32 rounds but would normally get 45-50. I want the additional 50% more (15 rounds)!

Other than inserting the plastic pipe I have done is there any other trick someone might have? Maybe because the 3/32 I inserted inside the 1/8" is larger than the filler tube it automatically weeps like this (that is the physics I don't know) ?

Thanks for scratching your head on this one for a minute.

Iceberg