I bought the the 2 burner kit,The regulator is very cheap and the crimps on the hoses leak,the threads on the airflow adjuster are very slack and tuning is a mystery.
the front of the burner has a plate that has a central hole about 16mm dia and 8 small holes toward the outside edge.
My intention was to replace the burners on my abana forge but after testing I decided not to, instead I am going to build a small lpg cylinder forge and try them out on that first..
Pete.