That is the only option that I am aware of for dealing with those cracks. Some of the 67-69's have them, although most I have seen do not have the problem.
My thought is that filling with Loctite is helping to seal it up and prevent moisture from gaining access, which of course could lead to further problems. But since you are not able to get any pressure to clamp the laminations back together I'm really not sure how much holding power the Loctite is adding to the joint.
Does anyone have experience with the long term results of this type of repair? I'm sure that the size of the seperation initially plays a big part in how well it holds up in the long run. I have one that just came into the shop that is wider than the one on Carlo's bow. I really question this one.
There are actually seperations on each side of the lower riser, but they are not on the same lamination, so don't go all the way through. On the first one, you can see where the core lamination has already cracked. This one looks like a real problem.
On the opposite side, the seperation isn't quite as deep.