I just did this on the same machine! First, you're going to have to pull the whole thing out of the machine to change the position of the check spring....it needs to be at let's say 6 - 7 o'clock. Then make sure it's pulled up over the piece it clicks against. When things are put together to the point it is now.....first piece #1...nubs facing away from you___ then #7___next #4...funneled part going into #7 beehive spring___#6....put on stud up to the threads___A....with red mark up___#5___#3___put #2 in the notch on the back of B___put B on lining up the stop on piece #2 with the red mark (just to the left of the piece that is projecting on A), Then, put screw C in.
When I screwed #4 onto the stud, I found that a good starting point was having maybe 2 rows of threads showing on your side. This is where you'll have to adjust to get a setting you're happy with. When it's together, tension will be set on 0. Turned up to 4, my tension is perfect. But depending on how strong the beehive spring is, your's could be a little different.