Rapido plus hotend

Has anyone installed a Rapido Plus on their ratrig yet? I had a big ...not sure what to call it, but had to reprint EVO parts and get a new hotend. I upgraded to the all metal Rapido Plus but something isn't right. It's not reading the temp correctly. I've replaced all the wires and no change. So that leaves 2 things, the board is damaged or 2 something special about the Plus that I don't know about. As soon as I turn the printer on and without doing anything it reads it at 159C, which I know isn't correct.
Thanks

Jim
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