It wasn't as bad as I thought it was going to be.
Sorry to say, I'm not sure what a "rear closer" and "front guide bracket" is. I don't know all the terms for the parts. I do know the following parts:
-cables,
-rails,
-front channel (that the retainer sits in) and the front channel cover,
-the gear and crank handle,
-the cable covers that have a hump in them to push the roof upwards at the end of its travel. If this is what you are calling a "rear closer", I didn't see any adjustment in it.