I just searched on Harmony and they say all their products control the XP-20. I think I am going to order one from Amazon even if I get the Pass fixed or replaced. I don't really like it that much since it is aluminum and cold to the touch, nor is it comfortable to hold. Then again, it doesn't need to be held long so I guess the comfort part is moot.
To follow up on this, Mark at Reno is having Pass ship me a replacement. It should be here Monday. Thank you Mark and Pass.