FFT megacore (variable-stream) sink_ready deasserts after dynamic size change 16->32

I found this thread which discusses sink_ready never asserting (https://www.alteraforum.com/forum/showthread.php?t=51097) - however, I believe these users had these problems due to resetn not being set properly when initializing the core. As my core works correctly for size 8, I think this is not the same problem that I am having. But it might help anyone that comes across this thread before finding that thread...