1 > The bend curve of your RDM mast probably dont match with the F8, much of RDM masts are +- Constant Curve and NS have flex in the top ( less than Pryde )
2 > Using a RDM mast with a SDM design sail involve :
- Replacing of cambers with RDM ones ( better )
- Tuning of battens with spacers ( a lot ) to counterbalance narrowness of the mast
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