Hi I have an old regal 10 I have been bringing back to working order in England there isn't much about for these and have being making do with what I can find I have been trying to set it up to cut metric threads but a lot of the info I have seen seems confuse me I have manged to modified a boxford banjo for the change gear as mine has a fixed typefor the screw cutting gearbox l have a 127to 100 change gear but need to fined out stud gear and screw gear size and imput would be well received mine is fitted with a hi low screw cutting box sorry is anything is wrong as I am not an engineer thanks dave