Thanks for the replies, i`ll try to elaborate..
In regards to making the logistical updates i`ve been trying to achieve, i realized quickly in my experimentation i`d have to change the research figures themselves to have any chance of success.
My latest thinking was to set research prerequisites for lets say "just in time logistics" as a criteria for researching starbase constructor frigate.
Then i wanted to open the abilitydeploystarbasetech and add a reference, after the prerequisites, to "just in time logistics". The idea being to bump the "perlevelincrease" under "maxshipslots". I was hoping this would increase only the bonus for that particular level. Thus every starbase deployment would add 200 supply to "just in time logistics".
The smart thing was that this approach would not affect further research as bonuses from the other logistics levels would be applied on top of the current value for "just in time logistics" and build on whatever that number was, for the remaining upgrades.
The problem was that everytime i clicked convert, the "string" and "hud" info got reset to string "" and hud "".
In addition everything except my research prerequisite changes were also removed.
As GeoFan77 has suggested, there seems an incompatibility between ability files and researchfloatmodifier commands.
I`m getting the impression that "entitymodifiers" are hardcoded for "ability" files while "researchfloatmodifiers" are hardcoded for "researchsubject" files. In that case there would be a seemingly impenetrable wall between research and other aspects of the game.
I`ve been through "Ability", "Buff", "Researchsubject" and "objects" attempting various approaches to my goal. Through a rather large amount of trial and error, i have found no way of rewriting logistics to a more strategically interesting and flexible system.
Unless the developers loosen the grip on modding restrictions to allow for this, i don`t see any solution. Which is really depressing. I`ve still only been at this "modding" thing for a couple of days and don`t understand it all that much, but i believe i have been thurough.
I`ll be looking into the standard fare vanilla modding- gonna mess with requiem and make their SSD do everything i want
Thanks to Ryat Geofan77 and Harpo for the help:) Modding only really gets interesting when there`s actually someone there to answer those silly "getting started questions". Everyone has them and they can get annoying, but patient "elders"make for enthusiastic "youngsters"..