A couple of points . ..

1. I'm not 'back', back. That is, I have no plans to 'resurrect' PoolForum as an active discussion forum, though I do plan to maintain it, answer the occasional question from members, and hopefully improve it, but as a mostly static information resource.

2. There still IS a lot of traffic, but it's not from members, just from Google. So . . . posting an explanation, especially with pictures, will be a valuable resource to some, over time. Infinity edges are very common, and problems with them are almost as common.

Thanks.