Hello,When sailing on a run or broad reach, with the boom where I think it should be, the mainsail on my 336 is laying on the spreaders. I have the topping lift loose, the boomvang pulled tight, luff and foot tight and just can't seem to flatten the sail. The boat has the short traveler on the steering pedestal. I have tried various trim combinations with no luck and with a concern about chafing of the sail I have been keeping the boom more inboard than I believe appropriate for these points of sail. Any suggestions?The mainsail is at least 7 years old. thank you,BobPilgrim