On Mon, 13 May 2013 15:41:20 +0000 (UTC), "Danny D."
wrote:

Since that joint is the critical joint, I'll be crossing my fingers
because, if that fails, the only other option (other than draining
the pool) is to bore out the Jandy valves.

Relax. I was skeptical about an over the elbow fitting method. My
solar has never leaked, I approved the method :-\