I have used an All Balls steering bearing kit before, but it was on a different bike. I have not seen the Ascot kit. Are there any instructions included? If so, what does it have to say?
You can most likely determine what spacer to use by "mocking up" the front end a couple of times to see which set up works best.
I wasn't happy to learn that the All Balls bearings were made in China.
Sorry I can't be of more help. Hopefully someone else will chime in.
Good luck
J.
PS. Let this be a lesson to you. Don't throw away the old part until the new part has been installed. I've done it myself before.