The leech tell tale blowing back round the leeward side of the sail generally means the mainsheet is in too tight (or if only the top of the sail, the kicker on too tight).Just received a new sail for my clinker built Opera built 1947. Problem is leech tell tails disappear round leeward side of main sail. The Gaff/Yard is hauled up almost vertical to the mast and has a leech line.
Any help please