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I did the same with 1" down to 1/2" After the pressure tank. which dropping down to half inch will also increase the pressure. Through out the house. I have two full bathrooms and a 2400 ft house. Thank set at 40 lbs. and never a problem. I stay constant between 32 and 40 lbs.
I made the comment because I know that 60lbs is the maximum limits and fitting over the long term have a tendance to give. But then again I am not on copper which would make a difference. also the hardness of the water. I had to install a softening system in.
Just exchanging ideas here. I am by far not an expert in these matters.

We do not have hard water here which is a blessing and I have no copper fittings either. I may go out and turn it down to 50 PSI. I had it high because there will be lots of houses on the well but not right now. It may have to be turned up later but right now I do not need that pressure. I, like you, are learning as we go. I just knew city water is at 60 PSI and the well guys left it there as it was set there in the beginning.

Yea and they blow pipes all the time LOL
Its easier to turn it up then it is to have a problem because its to high. as the demand on water is increased you can always turn it up.
The pressure on my tank is also 40 lbs. it gives a good balance to the amount of water in the tank and air. the more air pressure you have in the tank the less water it can hold.