Luak yes would love to get one

I would be interested in one if possible?? I'm in michigan
This would be my first experiment in grafting

I'm in Michigan and not be able to plant in the ground. But the tree is now about six years old and the stem and twigs strong enough to carry some fruits. Will see. Probably never enough that I have to store them for five month

I hope you are right. Remember the times when citrus farmers were assured DDT is safe? How many years did it take till they discovered it was not and for how many the devastating news came too late? And the effect is still there, ever wondered why the breast cancer in women in the middle age group is so high?
With medicine the same, Pharmacy tells you it is safe until the first lawsuits need to get recalled.
Systemic anything is not happening on my trees and if I can avoid it, will not buy anything that is treated that way. I just don't trust Monsanto and consortius.

Very interesting

wouldn't you see the damage from the leave miner? I had them four years ago and their trail trough the leaf layer was clearly visible.

leaf curl can be a water problem. Don'tknow your location but here, if it is very hot in afternoon, leaves can be curled. Too dry, and leaves can be culrled same if constantly too wet.

Thank you for looking that up Raggashack. That confirms a bit what I was thinking. I hope that if there are fruits on my tree that still need to get ripe, that it will be enough to bring them in the house with extra light and warmth.

That is great. As my citrus collection seems to grow, might need to think if I could overwinter some of them outside. I have a Meiwa ans owari satsuma. Young trees and for this year maybe not brave enough to bring them out. But maybe in the future a possibility

very interesting. Will there be fruits ripening with this method?

Sometimes I tend to love my trees to death ;(

You need a different fertilizer, much more nitrogen as citrus is a heavy feeder.  It is normal that leaves fall off from time to time. Your tree is stressed from digging around too. Just give it a rest, fertilize, water like your cacti ( maybe a tad more . ) And enjoy.

I am trying to keep it as much as I can outside. In the winter it is close to the door of my garage and unheated frame backing the South side of the house. It is mounted on the small cart and I am moving it inside only when night temperatures descend to -4C. Inside the garage in the dark it can be kept for around two weeks at temperatures around 8C.Ilya it sounds like your temps are not getting as low as here in MI or in Canada. Here is can get to -20C and with arctic wind chills even lower. I assume the tree does not has any fruits when you keep it in the cold dark? Or do they go in resting mode and ripen as soon as it gets warmer at your place?