Brenden,
Thanks for the encouragement, It was mostly about having the right stuff then finally doing it.
Sawing by hand and lotsa lotsa filing and sanding was very hard.
I cut 2 more with band saw / new blade (made that step easier )
Finally stumbling on right PVC pipe (for small ring ) made that tool way better.
Now "Pups dis-assembly/assembly" super fast and easy.