Sorry but Randall are very dimensionally loose on some models, with 18 style blades ranging from 11 teeth to 19...: most factories are way more consistent...
They always seem to be 0.1" short to spec, while most quality factory knives will be on the nose or mostly over by a hair, which is more acceptable than short...
I had an 18 with the guard completely askew laterally, misaligned handle to boot, and I my 14 had a point ground like a flared boat prow...
The clinton dagger I had was nicely done, but also the guard was not 100% lined up with both edges... It was OK but not perfect.
The only one I had that was perfect in symmetry (and also excellent point geometry and even taper) was my 14 grind model 12, and I notice that model 12s are very consistent in shape. Unusual for Randall...
3/16" narrower is absolutely outrageous, unfixable, and they won't give you an exchange or recognize any fault: They will put it down to the "handmade nature"... They made me pay to fix my "sparring-safe" boat-tip model 14...
Steel and edge geometry is outstanding on all, and that's what makes them valuable: The fine tall hollow grind means the sharpness stays the same over generations...
Gaston