Gas and air supply were enhanced. Don't try this at home unless you know what you're doing.
Eileen Yin Fei Lo cuts her cheap wok ring to fit on the cooking grate. Custom fit for each stove and wok rings are cheap.
I know. But this is for free, and besides wok rings i can get here do not fit properly over my stoves. Most important here is to open up gas supply, which i did with a thin drill bit and get rid of the stove lid to obtain a fire "jet". Works really nice.
The only problem i find (a good one) is to manage the fire. The wok gets so hot that sometimes it's tricky. Really need to move and shake it and be carefull when deglacing. High flames all over the wok! Beautiful.