Jimmy, are you sure they are exactly 1"?
Martyn, have you had a 1" handlebar?
hehe..Even 0.00000000001 difference would be awesome for some things but lets face it, only in theory we can get exact "measures"...
Only thing for sure jimmy, if it is that hard finding a handlebar with that size, in my opinion, you might want to think in getting something of this kind:
I wanna get one of these for my 1990 XT600E because mine are kinda bad..... These are for a Honda CR125 but will surely fit my XT because it only has one hole for mounts like those...