Imtermittant pixelation on channels riding 147 Mhz and 153 Mhz carriers (e.g. 738, 683, 680, 764, 681, 677)

have recently moved my service from Golden CO where it worked fine to Evergreen CO where I know have a problem. I have one X1 box and a SiliconDust HD HomeRun Prime cable card tuner. Both experience Imtermittant pixelation on channels riding 147 Mhz and 153 Mhz carriers (e.g. 738, 683, 680, 764, 681, 677). The signal strength of these channels varies from -5.5 dBmV to -4.3 dBmV, the S/N ranges from 37.6 dB to 35.1 dB. I have an active splitter serving the X1 and HDHR Prime receivers as well as a cable modem. My internet download speed is about 65 mb/s. I suspect there might be an equalization issue on trunk line (or drop).

Please Advise

Mark