I am a novice trying to figure out the rigging on my V224 for the first time. I understand the original mainsheet system, but mine is modified. I have the double block on the boom end tang but on the other end I have another double block with a cleat. It appears to me that this must have been attached either to the starboard side deck eye or to the same deck eye that the backstay is attached to. There is no standing block on the port side and I can't figure out any way to include the starboard swivel block cam cleat into the sheet system. Any suggestions?