Gps-speedsurfing

Have the above sail and find that the boom clew block is not compatible with 180 - 246cm Chinook Carbon pro 1 Boom. The block touches / rubs ie catches stressing sail  Boom set at 186 - 188 ideal running X6 mast. What should I do. Change boom. or modify sail??? Is a little better running boom upside down.

Help as I'm a NP faithful sailing 32 years, now 48. Never had an issue. By the way sail needed strengthing on clew battern after three months

Not running adjustable outhaul.

Think I've got it sorted now.

WINDSURFLAND