Fidelity Research FR64s Headshell dilemma

Can i just ask - whilst here - do most people use a mint or a wally style protractor? I use a clearaudio very similar to Llofgren A?

So i put it at 230 pivot to spindle and can get allignment. That said it is fully forward in the headshelll.

Actually i was using my clearaudio alignment gage - which i know is a bit different to Bearwald and Lofgren - although i must say i've always been happy with the results. I may try the other protractors first

I think I hae a universal protractor with My HiFi News Test Record - i am going to check that first as I bought a Jelco Headshell and I do not think it is any different to any other headshell in terms of dimensions

@rauliruegas I think you have hit the nail on the head.
If truth be told I have had the Clearaudio for quite some time, and have never thought to really question the various alignments, because with it, my cardas record sweep and HiFinews test record I always got a good sound and no more distortion issues than anyone else. - or so i thought...

@chakster 
u have it right. I have one clearaudio guage - thats it.
the denon is not my only cartridge - just for initial testing. I have a paratrace tipped shelter 501 and a transfiguration temper at my disposal.
i’ve always aligned using my guage - i have never just put a cartridge into a headshell and put parallel as i thought that was too imprecise

@karl_desch  u have hot to the issue. Your answer coicided with a query i made to mintlp - the headshell needs to be longer to do Bearwald or my Clearaudio for that matter. I think i will stick with 230...
btw how are jelco headshells - i bought a magnesium one with azimuth adjustment

Alright I must be a total luddite. I tend to use my guage where i place the tip of my stylus in the little circle and put my cartridge body parallel to the lines.Where i put the stylus i was led to believe is the overhang. At present it won't reach that hole.
I am familiar with the vinyl engine calculator - it tells what my cartridge is doing @rauliruegas it does not set out where to place my stylus/cartridge within the headshell

@karl_desch 
You have read, experienced and understood the same problem. The only thing you mis-understood was that i had thought 230mm only allows stevenson.
I was perhaps under the mis-apprehension that 230mm ONLY allows stevenson.
@rauliruegas I appeciate you sending me the link repeatedly - but my question related to cartridge shell alignment using Lofgren A at 231.5 - not what the actual distortion figures are. However, it, is nevertheless particularly useful as it shows and confirms what @dover has said and pointed out - namely that at 230mm one can do Bearwald, Lofgren etc.
Likewise @dover having experiences the same head-shell length thing confirms i am not going insane - i ought to try a cartridge that is longer or has a longer cantilever to try out 231.5 or get a longer head-shell. Until then I will use 230mm
For my purposes thanks and thanks again for the advice.

@rauliruegas 
I do understand what you and others have written. My simple question related to the fact that on my alignment guage and as it transpires others that have Lofgren and Bearwald alignments cannot get their cartridge out far enough in the headshell when one mounts the arm at 231.5mm PS distance, whereas at 230mm I can get it aligned. 
The vinyl engine calculator has nothing in it about how far in the headshell you mount the cartridge, nor about how it is twisted in the headhell. That said it was good to learn about the other things that have been written on this thread - which i will no doubt digest and re-read several times