I have the LRS+ in my bedroom system and never felt the midrange was forward and is quite similar to the midrange on my 1.7i in my main system.
The LRS+ is being driven by my old Adcom 545II.
I’ve noticed that the speakers being further apart and less towed in seems to reduce the midrange.
I would also try tweeters on the inside and moving them closer to the wall behind them. Mine actually sound best 2-3 feet from that wall.