On the 146-200 United Express paint...... I likely have changed the aircraft title section of the aircraft.cfg file for the United Express paint. Here is the exact copy of what I have in it:
[fltsim.X]
title=BAe 146-200 UNITED EXPRESS
sim=bae1462
model=
panel=
sound=
texture=uex
kb_checklists=BAe146_Check
kb_reference=146_ref
ui_manufacturer=British Aerospace
ui_type=146 200
ui_variation=United Express
description=Original model by Jon Murchison.\nBRITISH AIRWAYS textures by Jon Murchison.\n\nFor model updates and other downloads\nvisit
www.arnz.cjb.net.\n\nE-Mail
jonmurchison@hotmail.com\n
atc_heavy=0
atc_id=N607AW
atc_airline=United
atc_flight_number=6565
atc_type=BaE
atc_model=BA46
visual_damage=1
atc_id_font=Verdana,-11,1,600,0
atc_parking_types=
atc_parking_codes=
Change the number at the top to match the next one in your listing of paints. Hopefully that will help the right plane to appear in multiplayer.
best,
..................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 720