Can anyone give me some spec's on the arrow 500's pull studs... pretty please.

The machine I have didn't come with any, long story short is this machine has been dead for 10yrs. So naturally all its tooling is gone.

The manual I've got has the total length of the pull studs at 19.25mm, thread shoulder to top. Some searches on the net give a 28mm from shoulder to the top of the 45 degree. I've tried both these and it still errors on draw bar. I've been told they are even longer than the 28mm units I have, but no luck getting my hands on one to see if the draw bar error is from pull studs.

So if anyone can run a vernier over theirs for me it would be much appreciated, before I pull apart anything.....

Cheers
Colin