After my work on the HAMS on Wednesday, I thought I would try working on BSC feedforward some more. So far I've just gotten RX FF working on ITMY (I was then promptly distracted by other stuff). First attached plot shows the improvement I've gotten between 10 and 30 hz, red and blue are the FF on and off Y ground, magenta and cyan are the T240 RX with FF on and off. Second plot shows that I managed to not spoily the Y direction anywhere (same color scheme, red/cyan FF on, blue/magenta FF off). Last plot shows my design, blue is the X/Y FF we are currently using, red is the ideal filter, green is the filter I've installed. Black was supposed to be an estimate of the performance, but I haven't quite figured that out yet, I'll post when I've fixed it. It is supposed to be something like 1 - (filter installed) / (ideal filter), but all I get is ~1, which means no subtraction.