So you only have 8 tubes also? I thought I was the only one with 8 tubes, and everyone else has 10...Or some of the workers didn't realize that English goes from left to right
Mine is a top-airwash (gasket on bottom) door with corner-rope only (none in the center).
What's the point of the left rear plate if it is blocked off by rope at the center? It looks like the rope would restrict airflow into the combustion blower. I just re-read your springs thread... wondering now if you'd transfer more heat into those left tubes by removing the center ropes.
Here's another difference: my rods clean all 8 tubes, and all the way around them:
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