is there an "easier" way to do a 16-1 inside the mast? What is in there allready, 8-1?
Inside the mast is a 6:1 (making 12:1 with the 2:1 outside of the mast)
However you can upgrade this very easily to 8:1 (making 16:1 with the 2:1 outside of the mast).
Open up the mast and replace the free hanging single block WITH becket (= 2nd stage) by a doubleblock. You'll end up with one loose end but you can tie that off at the bolt of L shaped plate up the mast.
Close the mast up and DONE !
Dependents a little on the specific implementation in your mast but this shouldn't take more then 2 hours to complete while working slowly and carefully, double checking everything.
Wouter