I have Trudesign from 2019, bonded with 3M 5200 fc.
My are perfect.
I read about one person, on italian fb group, that has Trudesign in his swimming pool and said he had changed valve 4 time in 10 years because its remain bloked ,non cose not open. So I am asking in an internatinal forum where, the high number of person, could be better indicator.