modding unit issues....??

I know there are several tutorials out there but none of them seem to answer my question specifically my conundrums are these....

I first tried adding Libyan Spearman to Numidia...made a custom texture for it, texture showed up in game...good, put a custom unit info, and unit pic named properly in the DATA/UI/UNITS and UNIT_INFO/NUMIDIA folders.....but it defaults to some rejected official Libyan Spearman pic in I'm assuming the pack file...why is it bypassing my UI pics as I do the same for other units and it works?

So I went and created a new unit altogether similar to the sacred band of armored hoplites....called them Numidian Spearman, made sure the base model was cathaginian_medium_infantry...even gave them a new description, etc.......the UI pics worked but now when I click the unit it doesn't respond audiowise...so I did some digging in the audio files and couldn't find anthying to make it work....having mute units was again discouraging...

So I then went and thought hmmm maybe I could add it to a faction that has no initial UI pic of the carthiginian_medium_infantry....and went with the greek cities since on the map they are spread out but close enough to parts of greece that they could be a part of the army...added a texture fine, added UI pics working....so then go into the game and now it's showing a carthage standard bearer with a carthage standard, went into the unit changed it to greek standard...looked good but now carthage is walking around with a macedon standard bearer....so the only fix I had was to eliminate the officer from the unit altogether which wasn't something I wanted to do.. :(

overall I believe the best way of going about I believe is the middle option but I can't get the sound for clicking on them "Spearman, Libyan Spearmem" to confirm what they are to work...i'd like insight on each and every puzzle above...or answers for such...

thank you...maybe someone who has more experience can answer this...

Anyone?...

I figured out how to add a different officer "just create a new texture for the officer type and point to it for that specific faction".....but the one mystery that evades me is how do I add a selection sound to a unit for instance when you click on the Libyan Spearman they call out their name with carthage, I've looked everywhere for this and I can't seem to find any clear indicator of where...I see people are looking at my topic isn't there anyone who can help? I figured these things would have been mastered by people by now and I'm trying to figure things out but the community seems to be somewhat quiet around here...also the UI pics for the Libyan spearmen not changing even though it's named the same and in the proper directory what gives?

I figured it out..nevermind..I'm almost a master of unit creation now..

I might want to say when you add text of a unit to the EDSUV file to change event.dat to event.dat.bak...it might be useful to list this somewhere as I can't find barely any mention of it in throughout these RTW forums or anywhere else..someone mentioned it but it wasn't in direct corallation to this...this is my gift to anyone else who can't figure it out..