Yer gonna hate this, but you shot yerself in the foot by renaming the aircraft. Sounds and panels that are ALIASED, are ALIASED to the TITLE on the MAIN aircraft folder.
Such as...Beech_King_Air_350
if you change that to, say... Beechcraft King Air 350
OTHER aircraft that ALIAS TO (USE) those sounds, or that panel, will now have NO sounds or panel
The ONLY fix I know of is to find the ALIAS file and change to the NEW name,
such as...
[fltsim]
alias=
Beech_King_Air_350\panel
would have to be changed to,
[fltsim]
alias=
Beechcraft King Air 350\panel
And no, with 800 aircraft, you will have NO fun doing this.
Sorry, but as I said, you shot yerself in the foot
A_Z
PS How do I know this? Cuz I did the same thing, back in the day...