IR-to-UHF Pro upgrade kit with ViP211

[K4LK]

I upgraded my 811 for the ViP211 and gave up 2 usefull features. One being UHF control. I purchased the upgrade kit and can now control the 211 in my rear playroom but the UHF Pro remote that came with the 811 is useless. Apparently they're on different transmit frequencies. The 811 remote marker (at the bottom) is silver and the upgrade kit remote marker is black.

Anyone know a source for a spare upgrade kit remote? The kit costs only $50 so it might be cheaper to buy a second kit.

Thanks for any suggestions.
Dana