The ESP Guitar Company

I've always thought there were something strange with the action on my Alexi Laiho Scythe 2007 export, as i never could seem to get the proper action. After removing the locking nut to see if there were any shims or anything else funky beneath it,  I noticed that it says "R2" on the nut.  I cant find any information on the radius on the fingerboard, but i've always asumed it was 305 mm -  the same as all the USA Alexi signatue models. On the other hand, the current Alexi signature models on the russian site has a 350 mm. 

Wouldn't the R2 be the wrong nut for both the 305 mm and the 350 mm, as it is meant for 254 mm (see the FR locking nut table on FR's website)? Or cant it be that the radius on the guitar in fact is 254 mm?

The width of the nut is 42 mm, as the USA models.