Westerbeke 30B sputters when going from port to starboard tack

[Alex_V]

I was motor sailing to make up time during last trip. Everything running well, doing heal angles about 20-30 degrees. Engine was running smooth and good, but on a switch from port to starboard tack it sputtered a few times, and one time completely died. Restarted right away. Fuel tank is located on the port side, so it may have to have something to do with that. After a few seconds of sputter (lost RPM), it would run just fine.

Any ideas? Need to add baffles to the tank?

[Sailmonkey]

What is your fuel level when this happens?

Is the pickup tube center, port, starboard?

[Alex_V]

Fuel level was at least half full. Not exactly sure where pickup location is. I want to cay center of the tank, but not 100% certain. Boat is Sabre 34 with port offset prop, if that makes any difference. It was its first 450nm voyage under my command.