Quote Originally Posted by msm859 View Post
I have two skimmers and the main drain with 3 - 2" lines going back to the pad which is @ 25' from the pool. There is a single 2.5" return line. Each line has a neverlube valve on it at the pad

There is no extra plumbing to divert the water to drain the pool via the main drain. Wouldn't there have to be a diversion valve to send the water somewhere other than back to the pool?
Yes usually, a drain pipe is placed right after the pump with a manual valve so you can dump the water with either a hose or directly into a drain. You can also use flexible backwash hose to dump it on the lawn.

Also, it sounds like your plumbing is fine and will give you decent flow rates.