I agree, the 22's can go lower than 100, you might want to try 80hz or even 60hz on your receiver for the crossover. Make sure you have the crossover on the 500 set to bypass then. I would also say try small for the 22's. I use small for my m60's.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85