...the cage... part 2
I will give you my personal interpretation of this complex build. I don't say this is the only possible way to proceed, I just tell you how I did it. Let me know your impression about this sequence of operations... especially if you did this build in another way.

I think it's best to fix one (or few) point at a time to have a solid support if you have to stretch the part in some way. The best thing is to fix the part that stays in place by itself, without need of fixing help, and then, once glue has dried, you can fix in place the other extremities and fix them with glue. I hope I can explain myself with my poor English.
In this case first of all I glued the two upper fixing points. Then, once they are stable, I blocked the lower section of part 224 against parts 226 and 227 which tended to stay a little too downward.

Same thing for part 225 to the rear. First I fixed the upper two points and after that the lower part of the "tubes". This is important to keep the two main element of the "cage" parallel each other.

before applying the lateral elements I made two little tabs to act as a support point because I've seen that the braces of parts 222 and 223 are closer than the two tabs which they are meant to be attached.

I started with the right side (instead of the left as UHU did) because I cut and prepared part 222 (chose the lower number first) but I don't think this is important.
The first horizontal connector - 229a - is glued to part 222 before placing this on the LM.

Then I glued the 222 to my additional tabs. Only in a second time, once upper points are dried, I glued lateral edges (in the photo they are still loose).