Sounds like the position is fixed in a weird way, I'll look into it tonight.
Edit: Try this out.
Edit February 4th: link removed due to being down & outdated due to Valve updating the file since it was posted.
You must use
GCFScape, open Steamsteamappsaccountnamecounter-strike source shared and extract rootcstrikescriptsHudLayout.res to your Steamsteamappsaccountnamecounter-strike sourcecstrikescripts folder.
Then you have to make this one edit:
Code:
TargetID
{
"fieldName" "TargetID"
"visible" "1"
"enabled" "1"
"wide" "5040" // Default: 640
"tall" "480"
}