Richard,

My pool is closer to 19,000 gallons because it has a concave bottom. So I added 5 cups of Borax and allowed my pool to recirc for 24 hours. My pH is now at ~7.5 (Taylor color between 7.4 and 7.6). My alkalinity still shows ~40 (4 drops). So your calcs were dead on the money. Now if my pH and alkalinity will stay there, I will be in heaven. All I will need to do is add bleach each night and that will be it for chemicals.

Also, you said,

I'm just wondering why you saw such a pH rise even at relatively normal TA levels. Does your pool have any aeration features such as waterfalls, spillovers, fountains, etc.? I'm guessing there isn't since it's an above ground pool. Or has there been summer rain (raindrops aerate the water when they splash)?
I do not have any kind of aeration features, however sometimes my wife likes to turn the return port upwards when she is relaxing in the pool. The splashing reminds her of a waterfall.

Thanks again for all your help and education.

Jim