Lines on Picture Tube

[Console User]

I seem to be having something going on yet with my 1986 RCA Console TV.
When I turn on the old gal the picture comes on like it should but if you look real real hard onto the picture tube(especially up real close) you see a dark vertical line on the left side and behind that is a sign of bright light underneath. Then on the right side there is a vertical line going down near the extreme right hand edge that appears to be green in color. After the set has been on for a few minutes or so the issue on the left side pretty much disappears and the issue on the right still seems to be there but maybe not quite as noticeable. Also, one other issue it seems to be having is after it has been on for awhile there seems to be a horizontal gap at the very top of the picture tube between the very top of the picture tube and the trim that goes around the picture tube. I still have a good picture and none of the above issues have gotten severe enough yet that they distort the picture that you are watching. I would say that if you aren't aware of the above issues you wouldn't even no they are present except for someone as I that happened to walk up to the set and look real close . I then discovered these issues. Could this perhaps be some leaky or weak capicators on the main board inside?

Thank You!!