Sure I'll enlighten you, if you're willing to slow down and listen.
You are attempting too much too soon with these at this point. You have already removed 95 percent of the plant's roots. The roots are the plant's "engine" for new growth. You also have top growth left for those roots to supply (and vice versa) at this point and into the coming autumn. Strangling the root system with wire will make recovery of the already compromised root system next to impossible.
First, you need to back off a bit and suppress your impulse to "do something" to the plant. Beginners kill most of their first plants by OVER caring for them. You've already done enough this year. The goal now should be to get these recovered enough for them to make it through the winter and into next spring. The growing season is getting shorter already. Once past summer solstice, with the days getting shorter, trees are beginning their shift from active growth over towards storing resources in their roots (Which you have mostly removed). That means you have to work on getting a new system in place before autumn. That's best done by letting them be in bonsai soil and keeping them adequately (not over, not under) watered.