Hi,
at the HM web page as well as in the CCC19 handbook the mast lacing is described as follows:
"Correct lacing
Lace in 2 sections: boom to 1st reefing eye and 1st reefing eye to 2nd reefing eye. You needn't worry to lace the last little portion but can if you want to."
Are you using these 2 sction lacing? Is it necessary to use 2 sections or is it also possible to use only 1 section from the throat to the tack of the main sail?