Steve, I have sent the manual pages showing the differences in the arms. ( you may have got it twice
)
Together with the above pics from Tenrocca you should be able to identify what you have.
If I remember correctly the problem that Tenrocca was trying to identify was clearance for his springs in the CR. The G-force and RMC don't have the same problem as the spring is mounted under the top pivot bar.
However, Tenrocca's pics show the difference achieved in caster between the two series. This can be used to your advantage. I am positive that series 2/3 did not come in a kinked design.
I would just make sure that the components you have are from the same series and go from there.
Cheers