Honda-SOHC

Hi all!...

New to the forum and was wondering if anyone out there can help...
I'm currently in the middle of a build and have hit a snag. Long story short, I have deisgned my own rear wheel to take a spoked rim using the original wheel hub from a 1980 comstar wheel. Before removing the hub from the original wheel I had all the appropriate measurements taken from the original (Rim position etc) so that when I got the new rim spoked to my hub, it should align perfectly with the front wheel. Having had the wheels made i've checked the wheel alignment and have found it to be 11mm out. All the original spacers are used in the wheel (one of the reasons for using the original hub) and everything is as it should be from the wheel builders.
If I have the rear rim moved over 11mm to align the wheels it will foul on the brake caliper arm and will not be central in the swinging arm.
Unfortunately I never checked the wheel alignment on the original wheels so have no idea if they were way out in the first place.
Does anyone know of any CB wheel alignment troubles or have come across any similar problems on a build?

Thanks in advance, Chris.