Here`s a link that can help you a lot:
http://www.kv32tweak.freeuk.com/
I`m curious about something: these faults were there from the beginning or appeard gradually in time?
A few tips(from service menu):
1) with 'V SIZE', 'V POSITION' try to adjust (not too much) the vertical size of the screen just to see if the bottom has the same inclination as the upper side. If so try to adjust 'H Trap' so that the horizontal lines become parallel.
2) revert to the original values for 'V SIZE' and/or 'V POSITION'
3) do the same thing as in step (1) with 'H SIZE', 'H POSITION' and adjust 'Trapezium' and/or 'AFC Angle' if it`s necessary.
4) revert to the original values for 'H SIZE' and/or 'H POSITION'
5) use 'H POSITION' to center the screen horizontally and 'V POSITION' to center it vertically
6) use 'H SIZE' to stretch image so you can get rid of the "black pixels" from the left upper side (before this step you should have those black pixels on the entire left side of the screen or not having it at all - since the vertical lines are parallel)
7) use 'V SIZE' to stretch the image vertically so you can get rid of the that "mark" in the top left corner
8) to leave service menu use 00 from the main screen (TT--)
Be carefull! Do not adjust "too much"( don`t try to see how small/large the image can be!!)...just a few points. To be as accurate as possible use some pattern card to see how the adjustments affect the overall geometry.