Hey I was gonna use the 1515/1Y that I have but-
1) It's 2200 kV which means wayyy too fast on 6s and not
enough power
* on 4s.
2) I would need to make another mount with a 25mm/3mm pattern for it. Not so bad, except I'm lazy. I did enjoy using my bandsaw with that brand-new, 1/2" wide, 18 TPI, bi-metal blade, though.
I will see if I can find someone local who can turn down the shaft on the KB45. Who knows, I may try and do it myself.
*I saw that face you just made. It looked like this-
