Thanks Mmm_Donuts.
I put those in and got the same results, 85.71% with old, 100% with new.
Interestingly, I changed the spending to the normal default, inflation adjusted, leaving everything else the same, and the old cFIREsim got a SR of 81.32%, while the new one, with that change, got 87.91%.
Once again, the new one is higher, when it should be lower, if withdrawals are now taken out at the beginning of the year.
So it's not just something related to variable spending, there's something more going on.
Thanks for the data, I'm sure b_k will chime in!