The piston has been moving freely whenever i press it in. It pops out immediately when i let it go. So, I think that's good. I started the engine without putting the DV back into the place. I reved the engine and checked on the piston to see if it's moving. It popped out but it wasn't moving. I'm wondering if it's supposed to keep moving.I agree with Brexit..... the probability of a wastegate failure at exactly the same time as a DV+ replacement is inconceivable. I'd check for freedom of movement of the piston. If I were a betting man I'd plump for the electrical connection..... but then again, I'm not a betting man !