That is way off.
What protractor did you print off and did you check it against a ruler as they normally have a line to check it printed correctly.
When I had a Rega I printed off the K Willis protractor which was great.
Can't see it available on vinylengine but I'd use the Rega Baerwald.
https://www.vinylengine.com/cartridge-alignment-protractors.shtml
If it was aligned at the factory, it won't match with a Stevenson, Baerwald or any protractor other than that which Rega provide. Check it with the Rega protractor that came with the deck and it will likely be correct. It's not a case of your protractor being incorrect, and likely not a case of your alignment being incorrect; it's simply a case that the specified geometry and null points are different, and thus the cartridge will appear "off".
stevenson has better tracking for inner grooves so unless you listen to a lot of old classical records the baerwald is a better all round protractor
Yep stevenson is much better for IGD.
Give Rega a call and I'm sure they'll help you out with the necessary protractor.It didn't come with a protractor, just the cardboard platter disk with basic setup instructions. I can't find an actual official Rega protractor anywhere.