The peak as currently mapped on OSM is within a few metres of its surveyed location from the Hill Bagging website (https://www.hill-bagging.co.uk/mountaindetails.php?qu=S&rf=2389), which is a reliable source for hill locations (and subject to a licensing agreement with OSM). The location for it in their database comes from LIDAR data.

The summit of Glaramara as described by Wainwright (which is slightly lower than the highest point) is apparently further to the NE. Is that what you’re referring to?