Your on the right thread. study, study, study....
it's all here.
Start with Moncha's link to bart's fix. this is the most common first step.
While you are looking at the lift arm, remove the window tab bolts and see if the glass wants to rest on the arm. if it does, you do not need to do the spacers. if Not, follow the spacer instuctions.
Since you have the glass unbolted, push the glass rearward as far as it wants to go into the rear guide. While the glass is in this position, look at the lift arm holes and see if they still line-up with the window tab holes. IF they do, put the bolts back in and lube your tracks, knowing that they are in alignment.
Since I know that they are going to line-up, it's only by a matter of how much, If it's a little or alot, and how far do you want to go to repair.

You could try to reglue the window tabs.
You could try to slot the arm holes to meet the window tabs (only if a little off)
You could try to slot the four holes that hold the lift arm assy.
All three could work, you have to choose which.

FOR EVERYONE WHO ONLY NEED TO LUBE THEIR TRACKS, KEEP CLOSING YOUR DOORS SOFTLY, OR YOU WILL BE HERE WITH SOMETHING OTHER THAN LUBE TO SAY.