Hi Woody & Dave
It looks like I'm going to have to go down the welding route...
Frame still has ball type at the moment, I'm putting some taper rollers in, 30204 is the size
30204 = 47 o/d, 20 i/d 15.25 deep
30205 = 52 o/d, 25 i/d 16.25 deep
Do you know if all the mar models used the same size? or have i got an odd size headstock?