MAMEWorld Forums - MAME Artwork: Official - Attn: Mr. Do or Vas Crabb = invaddlx question

So I'm alphabetically up to the I's and I've hit my first snag. I've set up my invaddlx file with the following iterations, in order:
1. The backdrops.
2. The game screen using the "add" blend.
3. The overlay using the "multiply" blend.
4. The bezel.
Problem is, the overlay is affecting the backdrops as well as the game screen with this setup. Is this a result of the overlay being too complex (gradient) for the new setup or is there a syntax/method I'm missing? I haven't run into this with any of the other games with backdrops and overlays thus far.

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I have officially retired from sucking at everything I do. Life is much easier now.

My MAME/MESS artwork files: https://drive.google.com/open?id=1ABxeKgNIrKlIsyck7dx4V241NFQDWAF4
Related screen shots: https://drive.google.com/open?id=1U5IbvbVzYW97PuOOQuocvZFE_YJz7WIn