Leaving eaves open
There are many open rafter eaves, I dunno if it is style of your 40's bungalow. That blocking has to go if it reaches under side of roof and you want ventilation from under eave.. Stretch screen wire vertically back past outer wall across rafter bays down to house wall behind siding, may need some narrow blocking up top between rafters to fasten screen to. Cover screen with 1/4" hardware cloth under siding, screen door molding over top edge of cloth screen. Plenty of ventilation, no bugs, no rodents.( Sqweerell just too hard to spell)
Cut back branches if scraping roof or house, but the skwe.... tree rats gonna come across on them wires anyway.
Measure twice, cut once.
Look at the nail, not the hammer. Watch the fence, not the blade.
If you hook your thumb over your belt you won't hit it with the hammer or leave it layin on the saw table.