I read the letter that was sent to the BATFE and I did not see where it said SU motors, I read sport rocket motors regardless of propellent mass. Now I am at work so I don't have gthe letter in front of me, but I think? it also said something about the PADs did not fall in the 62.5gr ruleing.
I know a motor dealer that said bring in your case and leave with a PAD.
I guess we will find out.