The full fix is the following as a *-shp.tbm file:
+Name: GTVA Colossus
+nocreate
$Subsystem: Turret38, 0.3, 2.0
$Default SBanks: ( "Prianha" )
$Subsystem: Turret39, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret42, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret44, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret45, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret46, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret47, 0.3, 2.0
$Default SBanks: ( "Piranha" )
$Subsystem: Turret48, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret49, 0.3, 2.0
$Default SBanks: ( "MX-52" )
$Subsystem: Turret50, 0.3, 2.0
$Default SBanks: ( "MX-52" )
It has been tested and works, not surprisingly.
This fix will be in the 3.6.10.