You need to check if the mast is bend after falling down, if is bend, you cant do nothing to make it true again, probably a inner mast section and the 2 pieces screwed in the section can do the trick, but you are going to loose some mast material anyway, so later rigging
can need shortened anyway, and the 2 pieces need to be cut perfect to macht against each other , normally this is how many new productions masts are delivery
riggers , example can be the new mast we fit in a lagoon
41 2 weeks agoo , a insert in the midle and the 2 pieces screwed,the owner complaint but is Lagoon
who can deliver the mast like that right now, compresion loads are great in a mast so you need plenty of screws in both sides of the mast for the insert, i recomend you contact your local rigging
shop or rigger and ask for a insert for your particular mast , many old production masts are out of bussines and you need to fabricate a insert instead, mast wall thicknes are considered for the insert to,this is just a idea , hope it help. good luck.