problem with metric gear conversion

Hi All
I’ve just joined your forum as I have a small problem and need some help.
I have a Myford ML7 with gear box (imperial machine) and have just bought the metric conversion gear set with quadrant. No 1481/1
I installed the 60T/63T and the 50T/45T as the diagram shows and put a 60T on the leadscrew.
The thread I was wanting to cut was a 1.0 pitch. The gearbox manual says to put the 30T on the tumbler the selector on 6 and the lever on A but this gave me a 2.0 pitch.
I also have a metric chart inside the gear cover on the lathe which is different to the on in the book Following this chart I put the 40T on the tumbler set the selector to 1 and the lever to B but again got a 2.0 pitch thread.
The chart in the lathe cover has two sides one for using the 60T left side the other for using the 30T right side. Looking down the right hand side 40 60 1 B would be correct if using the 30T on the leadscrew but I’m using the 60T.
I’ve missing something just can’t see what .
The only thing I’m thinking may be wrong is the gear set I bought was advertised for a Super 7 not the ML7 but as far as I know it should be fine.
Any help would be much appreciated.
Thank you
John