Will not be back to boat until next weekend can get what you need then. I would consider making them yourself, not much to them, checkout Sailrite.com they carry everything including tubing. Thinking about it I am actually shocked that you lost a front leg, they are connected to the frame. You need the two pointed at by red arrows and the one the arrow is point to on the right in the second picture?
Topic I did on taking one down/putting it up if needed.