balancer coming apart

You bought a cheap piece of **** and are baffled as to why it failed ?
I can name a few that don't have that problem , and maybe you now understand where that extra 200.00 goes.
Even with gaskets , quality counts for something.
Better make sure you didn't rash some bearings too.

When you consider it's a Pro Race OEM replacement balancer then, it's not "cheap" is it?
If it failed from daily driving , then it's a POS. If it's been getting some revs then you run the risk of it failing. Sometimes the bonding process has a hickup. Made in Australia , so I guess it could just be a POS....