ok, after playing around with everything I noticed a few things, 1 was that zoom seamed to work ok for me using 3.6.12 final, secondly because I haven't got tbp I had to adjust the table to use FS2 weaponry and use the generate icon flag and comment out some stuff. with the generate icon flag set I noticed that the generated icon was out of alignment showing the ships nose at around the centre of the image (also if you look the targeting display is similarly out) so I went back to the comment you made about the offsets on the detail levels, when I zeroed them I noticed in particular detail1-3 jumped along way to the point of placing the nose as the centre of the model. with that discovery I exported the model back to dae and then back into blender and sure enough the centres were shown as being out on detail1-3.
I think the next steps are to check your models line up in blender (the fact the models on mine were not could have been due to the conversions) and that the pink dot you get in object mode when you select an object for each detail level is in the centre of the space when the detail object is. This pink dot is used to define the centre of the geometry in PCS2, if when you line the geometry up (detail0 and the shield should be in the right place) and you find the pink dots are out of alignment, clear the selection and centre the 3d cursor in your view properties then select each object individually and go object->transform->Centre Cursor, this will centre that pink dot to the space. Once you have done that press u, 2 on each detail to make sure it's a single user (the next step wont work unless its a single user and I don't know the difference I just know I get annoyed whenever I see the stupid error message about it) then on each object hit ctrl+a on and click scale and rotation to object, this will make sure that the current shape and position of the object are its zero otherwise PCS2 will move things to zero them which is a pain because you have to fix and reimport it all again.
Hope this helps
The shortcuts and instructions given are for blender 2.49b I'm still getting the hang of 2.5 and as the collada exporter seems borked on mine I'm in no hurry.
Quick question to the ppl in the know is the game supposed to use detail1+ as opposed to detail0 to setup stuff like the shield icons and targeting display?

The original problem

Looks fine in tech room

My re-centred version of the file, yes i know the texture is wrong, PCS2 to dae strips texture info and it was quicker to load one of my blanks than go hunting for the proper textures in the maps folder