Some boats may not mind the change, Others might. I heard tell of an individual that change his rig, mast included to C-F and the boat sailed so bad he actually considered it dangerous. From what I heard he changed it back again.
Just be carefull, of course if you had a radar and what not up there and you then compensate by changing the SS to Syn then it is more likely a wash.
Good Luck,
Go Slow
Sail Far
Stay Long