Pete
As timbo says, be carefull tensioning the Jib halyard.
As for wind speed and 2 trapping, 15 kts you should be de-powering !!!!
Something very wrong here.
How much pre-bend do you have on?
what purchase do you have on your main sheet?
How hard are you sheeting in?
Prebend is still to factory setting, whatever that is. 6:1 on the main. I think the next outing there will be very little downhaul.
With 180kgs trapped out, I'd think we'd need full power. But what about rotation? 20-30 degrees? Also, it's probably time for a split-tail main sheet.