Thanks Morpheus, I have a mix of kbg, rye and fescue with mostly perennial rye which burns out easily over the summer. I’m going to core aerate and drop fescue seed to try to establish that more in the lawn since I get a good amount of sun. Will the aeration be enough for good seed contact with the ground, especially in the burnt out patches? Or should I rake up the dead grass? as an aside, I’m in zone 6B eastern Massachusetts.

Are you doing the core aeration yourself? If not consider asking your service to make double the cores they normally do. note that I'm not talking passes as that depends on the setup. Hard to get much take overseeding into an existing lawn, especially one with perennial ryegrass. The more you can beat it up the better.

curious what fescue...

Yes I will be aerating myself. The fescue I currently have is a mix of TTTF and creeping red. I’m going to buy Jonathan Green Black Beauty to put down. Also, I’m mostly trying to fill back in the areas that burned out over the summer or that didn’t take last year when I reseeded part of the lawn.

creeping red will brown out in summer when in full sun also. The good thing is that you can always use Tenacity to decrease the %. Have always heard good things about Black Beauty but have never used it. Going to use some left over Cochise IV, and bought some Rendition to try this year.

We’ll see how it goes. This is year 3 of my reno so I’m hoping I can be mostly in maintenance mode next year. For the browned out patches, do you think the aeration will be enough or should I rake up the dead grass?

aeration is plenty if you really core it up good. you'll see plenty of dirt. hopefully weather cooperates so you'll have moist vut not soggy soil

the soil right now is moist and we’re supposed to get 1/2-1 inch of rain overnight tonight. The seed will be going down tomorrow But I may wait because we’re supposed to have 40-50 mph winds tomorrow morning as Dorian passes offshore.