Couple of things.......
Blocked/obstructed return air.....sitting out on bench it is out of cabinet
Spark electrode position/air gap........should be 1/8" and directly over burner slot
Pull connector on board.......use pencil eraser to clean contact surface. Make sure pins in connector are making good/tight contact on board
That gas measurement..........11" WC at stove
Was that with just one burner..........or all burners, fridge, water heater.
Best practice is measure with at least 50% of gas appliances in service.......the more the better the measurement of how regulator responds to demand.