So I picked up 2 sets of radio keys from a local stereo shop so I can pull my deck and replace the climate control module. Having owned a number of VWs who use the same keys and what I thought was a similar removal process... well I slide the keys in and the radio isn't budging. Am I missing something or is it just... stuck and I need to use a little more elbow grease? Any help or advice would be highly appreciated.

thanks,
Justin