Thanks @robertokc Coincidentally I went out this afternoon to purchase the hardware that I need. I went to a Ewing ship that I didn’t even realize that I had within 5 miles of my home. I took my self-audit and mentioned the MP Rotator recommendation you had. I previously bought the pressure gauge that @JPedrego recommended. It read 48psi, so I dropped it to 44psi last night and ended up purchasing the non-regulated MP1000s. The regulated version was a few inches taller so I would have need to add swing joints as well. If I had to go that route it would have cost me extra in materials and I would have had to dig out more of my yard.
So now I just need to dig out around my existing narrow bodies to allow the wider MP bodies to fit. I’ll play around with the throws and do another audit. The guy at the shop said that the usual recommendation is to use a throw that goes from one head that terminates at the adjacent heads. That doesn’t work so well for my yard since the spacing isn’t uniform (see the yard and RED dots for the heads in the original post above). Any recommendations on how I might adjust throws based on the situation would be appreciated. Otherwise I’ll just play with it and see what works.
Thanks to all of you in this thread. You’ve taught me quite a bit in less than a week.