I close and open the old pusher without any problems, I turn the lid and it works. I have a new 8 liter pressure cooker and I can't put the lid in the pot. I called my husband for help, but he couldn't do it either. After 15 minutes of trying to get the lid into the pot, I slightly stretched the lid and it fit. I want to buy a smaller one. You also can't close the pot easily? If the lid can't be easily washed, how do I open it hot?