https://youtu.be/e_Yg8SbX8P4
So I stepped down to a 30 series tire. I used a set of MPSC 2's in 295/30/20 & 305/30/20. The car still has no track alignment but the rubber definitely helped the low-speed understeer. Here is a video of the fast lap:
https://youtu.be/e_Yg8SbX8P4