Factory adjustable sights

[thor69]

I have a 92 that shoots low left regardless of 115,124,or 147 gr loads or person doing the squeezing.I had put an adjustable sight (Mec-Gar) on my last 92(stolen)
but didn't like that it impeded access to the hammer.I would like to put 99 adj. sights on it but can't seem to get ANYWHERE with Taurus.I called the rep in Miami
to ask what grain of round was used to test fire the weapon and the (edited) told me I'd have to call Brazil.I told him that was his job and (edited) you very much.
Any of you pistoleers have any suggestions or tricks as to how to order the 99 adj. sights?