Another skimmer issue

[gregzz4]

This morning I found my skimmer overflowing after running for nearly 2 weeks without issues - minus the epoxy I used
So now, 2 days after I cleaned all the remaining epoxy out of it, it starts overflowing.
I stripped and cleaned the whole thing but it still wants to overflow unless I close the air right off and open the outlet flow fully
Before this, if I turned the air off it would overflow, now it stops it from overflowing ?????
The foam is really frothy and pretty much only white

It's a Skimz SK181

Any thoughts ?