Got my PM in March 2019. Tech detected problem with top lead signal in June 2020. Surgery in August found one lead dangling (disconnected) and second lead almost disconnected. Generator was O.K. Surgeon replaced one lead and reconnected both leads in new locations. My energy level has improved noticeably. Surgeon claimed two attach screws may not have been torqued adequately/correctly on original procedure. Seems to be some 'trick' to correctly attach these leads.