Thanks, to all who replied. I have looked things over and I know that all is back as should be.I have taken the gun in to my local gunsmith/dealer ...they deal in Italian guns.I think I just let the spring get too damaged. Not cleaning the spring and tube;hunting from October to January in solid rain,etc., for a decade, with the same gun has finally done that part 'in' ..I hunt on the west coast of B.C.. It it so wet that it is not unusual to have 20 days of straight rain.My duck gun is usually soaked.I should do a 'deep' cleaning at the end of each season. Got to hand it to Beretta 390 autos, they can go a long way under some difficult conditions!