Thanks for your help. Pre-pro code 113 (Pace STB) works for me. (Sort of - it does seem to repeat keys about 1/2 the time).
Josh
Quick edit..According to URC tech support the MX-350 doesn't support the Xfinity X-1 Pace STB's. MX-450 does though.
Last edited by jlayer3 on August 18, 2014 16:12.