Many reasons factor into that dismal mod car count.
First up was a terrible wreck last week that wiped out a bunch of cars and sidelined one of the track's best drivers this year.
Second, they went back to Saturday nights up against NES and Grandview. Those two tracks took away many who had been running Bridgeport. I still think this was a stupid move when Sunday night was producing amazing races with stacked fields.
Finally, tire wear has been an issue. I'm not sure if this kept anyone home but eventually it will hurt the lower dollar teams.