Hello, I am having a problem with my lemon tree and I hope I can get help here. I am not sure what kind of lemon it is. It was grown from a branch off a tree from my fathers house in Italy. It is 38 yrs old and was my dads baby. He passed away 2 years ago and I took the tree rather than let it die. It has been inside my store for the past 2 years,in front of a window and very seldom gets outside (its on wheels). It is potted in a wooden barrel. I have had problems all along with scale bugs and spider mites. Have used Safer soap to try and control them. Recently it was suggested to me that the soil may need to be changed as it was at least 2 years since this was done. I removed about 5 inches wide ,all around the pot to the bottom and cut back the roots to try and shock it into growing some new branches.I also wheeled it to an area where it could get some natural light and open air. It has been about 3 weeks quite a few of the leaves have fallen off. Some of the upper branches seem to be dieing. There are a lot of new leaves growing , but they seem to be disfigured as they are growing with a kind of curl at the tips and end up cupped. I am a complete spaz when it comes to growing things but I would really like to keep this plant alive. Any help or advice you could give me would be greatly appreciated . I do have a number of pictures if they would help.