Struts arrived and were installed on Wednesday. The holes on one side of each of the struts to connect the wheels to were slightly too wide (11.5 cm vs 10.5 cm).
We've taken away part of the wheel holders and now they seem to be fitting in.
See attached photos:

1. First wheel with wide holder holes
2. Close up of work done
3. Second wheel with wide holder holes (on opposite corner of chamber)
4. Close up of work done
5. Wheel holder that was warped previously
6. Wheel holder that was warped previously, other perspective
7. What chamber looks like as of Wednesday afternoon
8. Lead sheets to make chamber a little bit more secure.