That is highly unfortunate. Great cartridge for that tone arm! It's going to sound great. Most Protractors use LofgrenA. Mike Fremer prefers Lofgren B. I don't know anyone who likes Stevenson. It improves distortion at the end of the record and gives significantly higher distortion levels everywhere else. Uni Din is a cross between A and B
If you make the two jigs, effective length and overhang, you will need nothing else as long as you are happy staying with Lofgren A which I am pretty sure is what SME uses. Otherwise you could just set your effective length then use the DB systems protractor. It is very accurate but is a bit finicky to use at first till you understand what it is doing. You'll just have to slide the base back and forth till you get it lined up right and as I said earlier it magnifies the error so it is easier to get it right on.
Actually, for all you alignment jockeys, you can use a DB system protractor to set any alignment. I was just staring at my DB systems protractor. It is a Lofgren A (Baerwald) protractor BUT you can photo copy the opaque card of the protractor, laminate it to cardboard, punch out the spindle holes and draw any null points on it you want. They are: Lofgren A 66 and 120.9 mm, Lofgren B 70.3 and 116.6 mm, Uni Din 63.3 and 112.5 mm and Stevenson 60.325 and 117.42 mm. How much fun can you have on a Sunday? Happy squinting dhcod