Sail to mast velcro craddle attachment

[TaylorFrank]

My wife has a United Performances "Ultra profile Sail" from the early 90's. This sail has 2 plastic cradles that insert into the edge of the sail and then attach to the mast by velcro. One of the plastic sides that slips into slots on the sail has broken. Can anyone tell me the name of this part or where I can find a replacement?

Thanks

Frank T.