Ok, so you took off the wire you placed during the winter?
Ok, here's the way they do it in Japan:
Look at your new shoots. Where they start, some of them will be "up/down" pairs, some will be "side by side" pairs.
On the "up/down" pairs, remove the "down" shoot. It should have been removed before now. Better late than never. This leaves a new branch growing upwards, right? Keep it with its leaves on. You're going to wire this branch down with aluminum wire. Kinda fat aluminum. Cuts in less. When you wire the soft green shoots, you can carefully put in little undulations, up:down:left:right. You don't need to wire to the end, just maybe 5 or 6 inches.
On the side-by-sides, you can keep both, or eliminate one. Wire them too. The green shoots. 5 or 6 inches.
This wire will only need to be on for 4 weeks or so. By then, your little curves will have lignified. Remove wire. Cut back to one or two internodes! Preferably an up/down pair.
Let grow until you have 5 or 6 new pair of leaves, wire again...
See the Ebihara Maples thread. Peter Tea's blog when he was in Japan has it, too.
