Question Classic Burn dissolve effect issue, unsure what AlphaClip Threshold needs

The burn effect is working, alpha seems valid, but no matter what I feed into AlphaClipThreshold I can't get the whole thing to render properly (either too much of the burn effect is removed or none at all)

Any help with this would be appreciated! Used ASE before this and that didn't have a clip threshold, just the opacity mask channel

This is the best combination I managed to get so far, but still a lot of the burn effect is missing (the yellow part especially)