Other than the size, what are the differences between the CY-12R/C and the CY-14C / CY-15R ?

Do the V-cymbals have to be mounted in a certain direction on a stand? Could I use it even if I turn it around ?

As for the TDW-1 with V-cymbal Control, what has been improved from the first TDW-1 ?

I lost the nuts and felts that came with the MDY-7U / MDY-10U. Can I still mount the CY-12R/C, the CY-14C, or the CY-15R without these parts ?

Can I use a V-cymbal with a TD-8 that is at a software version earlier than 1.10? Also, can I use a V-Cymbal with older TD-series models or an SPD-series unit?

Can I mount the CY-12R/C / CY-14C / CY-15R on a cymbal stand made by other manufactures ?