JVC AV-56WP74 56" Rear Projection HDTV-Ready Television "messed hair line" Questions

my focus is all messed up and before that my screen was grainy what needs to be done go through the convergence. line the blue and red cross hairs.

Cannot align/converge using on-screen menus I have used the on-screen convergance feature/menu but it appears to be hopeless. I can align the cross-hairs horizontally to white lines, but the verticle ...

...messed up. The bottom 1/2 of the tv was okay but the top 1/2 was curved (or bowed) in the center. If you are viewing a completely blue screen, there is a black curve or semi-circle at the top. Or, if ...