I went with the one the pool store had in stock and installed it last night. Nice and quiet. I will check the model number since you mentioned it.

It seems a little smaller and cheaper than the pentair dynamo, but so are most things today compared to 10 years ago.

I also bought more stabilizer. Mine is 30ppm or less and I need to put in about 1 bottle (3qt) of bleach a day. I will try to get it up to 50 or 60 and see how it goes.

I wonder if anyone can use a 10 year old pump with a motor with bad bearings....

thanks.
---Dale