After 12+ years, go figure ...
A 2" coupling cracked on the main jet pump.
With all the piping glued. I thought this was going to be a real big PITA job.
My dealer had a split nut coupling, IN STOCK.
I used the oscillating tool to cut the cracked coupling off and on went the split nut coupling.
I had to drain the tub to do the fix.
Life is good, sometimes.