The 35Hz spike is there regardless of speaker placement and LP - varies a tiny bit in magnitude, but not much. Room is 11.5’ wide by 15.5’ long and 8’ high. Probably a characteristic of the room.
The 60Hz dip can be filled in at the expense of creating a more shallow one around 180Hz.
The speakers are places 1/5 of the room length from the front wall and 1/5 of room width from the side walls. It was recommended to place the LP about 1/3 room length from back wall (60”), but I found I preferred my LP 54” from the back wall.
No tone controls active. I’m using Pure Direct mode on my AVR to bypass the Audessey room correction. I’m only using the AVR for the sweeps because it can accept the HDMI from my MacBook. Normally, I use a McIntosh C35 preamp that has a 5-band EQ, but I normally listen flat. Sometimes with a small bit of loudness contour, but mostly flat.