US power too high

US power levels have increased significantly over the past 5 to 6 weeks. The CMTS needs to be polled to make sure it’s not equipment ( Xfinity ) related. Only 1 (2) way splitter installed, no amps or other add ons. Info signals were right around 40-41,,,now it’s 49.5-50…out of spec. This is upstream ,,downstream and correctable/uncorrectable,,not an issue at his time. I suspect equipment problem somewhere within the plant,,close by, other than having a tech come out and not have a solution,,I am respectfully requesting a hard look at the CMTS.