[suicideneil]

As was just stated, the Hyper 9 diffs are smaller/slimmer than the other ofna diffs so they arent compatible as such.

The LST2 diffs and Hyper 8 diffs should be interchangeable though, since both types can be used in FLM hybrid bulks and UE Ultralite cases- they are different ratios though so you must choose one or the other, not able to mix parts as such.