I am changing my reba 120mm damper from a remote to a crown lock. I order the crown mount damper listed in rockshox spare parts catalog (11.4015.544.330), but it will not fit. When I measure the bottom of the damper where the o-ring fits it is larger than the remote damper that i removed. The remote damper I removed looks different (more like the DNA style than the new RL style). I have heard that the Reba 120 is a continuation of the Sid B and has a slightly smaller ID diameter sanction. Do I need to order a damper listed for the SID B? Also, looking at the SID B dampers they have a MOCO RL & MOCO RCT3 listed. I know that the RCT3 has a LSC adjust, but besides that does it dampen any better? Also, consider the Charger 2 RCL upgrade, but does not look like they make those anymore for the 120. Any help would be greatly appreciated.