[Russell Sobie]

As posted in the thread for this app here: http://www.simracingsystem.com/showthrea...1#pid19731
I have made two separate skins for the Audi TT Cup for the "russell_sobie" folder, and I'm seeing other drivers unable to get the new skin. I can't tell if SRSTV and other drivers on youtube that have seen my skin this season got the old one recently (i.e. my updated texture hasn't actually been uploaded to the SRSSkin server) or if they got my old skin because they raced with me in the last 5 seasons or so where we did the Audi TT Cup before.
I experimented with changing the file size on the main skin file EXT_skin.dds and the skin app said my changes were successfully updated, SRSTV didn't show it yesterday. I don't know if actual drivers successfully downloaded it... and if they did, if they bothered to restart their client after getting the update and actually saw it.
My questions are these:

1. If someone wants to have multiple skins for a single car, what are their options? Can you have multiple folders for a single driver somehow (russell_sobie, russell_sobie2, russell_sobie3)?
   
2. At what point does SRSTV actually show an updated skin? Does it need to "restart" like a regular client does after downloading a skin?
   
3. What is used to differentiate files to know that a skin has been updated? Filesize? Date modified?
   
4. If the answer to #1 is "no, there is no way to do that" then how can I force other drivers to delete the old skin so they get the new hotness?
   

Thanks!