Maybe you are the right person to ask a couple of questions about my just received Gaggia Carezza. When I try to place the Filterholder in the brewing head, it doesn't fit and it's impossible to turn it into position. This only take place with the Single Shot cup filter. The double shot cup filter fits normally, but it does requires a very strong and hard turn in order to reach the lack position. Is this normal? Am I doing something wrong?. Is there any way to make more room for the filterholder to go all the way up to make it easier to turn and lack?. Thank you in advance with your help!!