I am looking to buy the Feather SS making the switch from DE razors and have a question on the Feather SS. I have a Mongoose razor and really prefer the Kai blades to the Feather blades. Will the Kai blades work in the Feather SS? Both brands fit in the Mongoose with the exception of the Feather Pro Light blades do not fit the Mongoose. I have two packs of Kai blades and would like to know if they will fit. Thank you.