Merge edge
1. Please share your design
2. Please use the big, fat, hard to miss the camera button to embed images.
Images can also be directly copy/pasted into the post or dragged into a post if you're on a mac.
The T-Spline Looks good to me. There is one area on the lower head tube where you might want to weld two vertices together, but that worked without a problem.
What edges and vertices are you having a problem with?
Cold you demonstrate that in a screencast?