We don't use the rings on re-cones -- they are used from the factory as their glue isn't as good as ours and it's 100% certain that spider is NOT going to come off.
With CA glue on the spiders it is extremely hard to get the spider off of the frame. Typically I will also either pool up CA on top around the perimeter of the spider or fill in epoxy around the edge when I re-cone them for customers.
The very FIRST production units had no ring so I made the video of adding epoxy around the spider.
Next couple runs had the spider rings and same cone / spider.
I have some that will be here shortly with our newly tooled surround but still same spider.
Mid to end of November the units with new surround, new spider, slightly modified D2 coil, and bigger leads will be here -- that is the final version for the SA-8 in it's v.1 form as it addresses all currently known modes of damage / failure we have seen to date... will be around for probably a few thousand units until I come up with something big enough to make a v.2 version.
I already have the new spiders in stock for re-cones and will have the new cone / surrounds in stock with the November production run.