amun_AcousticTorpedo Controller - Help!

[CrocodileDundee]

OK, I'll try to be brief, plase help if you can/have the time.

I'm using S3D on Torpedoes_US.sim. MK27 has a "amun_AcousticTorpedo" controller that enables the homing engine (which I suppose it's hardcoded).

Several people have been able to clone this controller onto other torpedoes (e.g. keltos01). I can't seem to be able to understand how this works regardless of several trial&error tactics.

What I've done so far:
-exported the whole chunk and try to re-import it over (overwriting) another torpedo (amun_Torpedo). Then I end up with a node showing <!amun_AcousticTorpedo!- amun_Torpedo!>. I suppose the "!" means I'm screwing something up.
- tried to copy just the header "amun_AcousticTorpedo" and then manually append a new chunk/proprieties type/SH4sim/amun_AcousticTorpedo - but that leaves the torpedo data empty - need to recreate that manually?

Could someone who's done this explain (via example if possible) how S3D works with regard to chunks? Say I want to enable the acoustic controller on the Mark10 (just coz it is the 2dn torp after MK27 in the sim file). How on Earth does one do that?!!

I must say, I'm relatively good with datastructures, but this whole chunk business leaves me a bit perplexed.

Any light shed onto the matter is highly appreciated.
Many thanks!