Document sets SharePoint 2010

I have a real annoying issue with sharepoint Document sets. Its the first time in a while i've used them so bear with me!

The issue is in a nut shell i have a document library with multiple documents sets. When i create my first document set. everything appears as it should. But when i create my second set, documents in this set are picking up the first sets meta data.

 To try and show you heres a few screen grabs.

I’ve used the document set Labels in my example, so in labels the following columns have been configured

When you create it you are correctly prompted for these columns

but then once the set and the files within are created it adds extra columns from a completely different document set (title greyed out as it has company info within) 

Anyone got any idea why the hell this is happening.

I've literally tried rebuilding the document set the entire document library nothing is working! i'm genuinely hoping this is a major bug! or an obvious fix which i've missed!

And please please dont say you should upgrade. I know this but the business i work for is a non profit orgonisation and cant afford to do this. 

Thanks in advance!

Sarah