21 Mar 2019 08:27
Those numbers have nothing to do with the temple length. 54-20 and 51-20 are the lens and bridge widths (ie 54mm wide lens, 20mm between the lenses). The other numbers I assume are the limited edition numbers (ie pair 63 out of 400 made).
When you sit them on a flat surface are both temple tips touching the surface or is one raised?
If one is raised then something is wonky (no lanz). It could be a slight twist in the front or a slight difference in the temple bend or angle. It's a quality control issue and for the retail price you'd expect it all to be balanced. It may be possible for an optician to adjust them for you (they'd warm them up in a frame heater and bend back into shape) but I'd question it with the retailer first. Who did you buy them from?
If both temple tips touch the surface then it's your head that's wonky and you got lucky with the fit of your first pair. In this case the it's not the retailer's issue but an optician will be able to adjust the frames to sit better, again with a frame heater.
21 Mar 2019 12:57
Shit, you got a head like Sloth from Goonies?