Im not having a problem yet but im germing as i type so im making a plan in my mind ill LST only if i can repot themyes i have.. it really isnt that much different than transplanting any other plant. i would just untie any strings you have holding down the branches, transplant it, and then tie back down branches where you want to. i think the only problem you could possibly have is dealing with the change in circumference of your pots. but that still shouldn't be a problem. maybe if you are a little more specific as to what problem you are having i could be of more help