No, it's underpowered for full boils. Eventually it'll get 7 gallons boiling, but it's more of an anemic simmer.
I also gave up on my 23 jet burners, the ones Bobby provided a link to. I tried a lot of things, including plugging half the jets with bolts and even installing a regulator inline. While it may be a limitation of my supply line (1/2" stub on my patio) I could never get them to run clean, and after each batch my kettle would be covered with a thick layer of soot.
I've finally found a nat-gas solution I'm entirely satisfied with. You know those big honkin' Hurricane burners in the homebrew catalogs? The ones that say "Propane only, cannot be converted to natural gas!" Well, they run great on natural gas, with the simple addition of a
"Conversion Valve" from Williams Brewing. There is a reasonably wide range of flame control, and it's easy to dial in a clean burn by turning the restrictor plate. I believe the "conversion valve" is just like the stock one, but with a larger orifice.
Yesterday I took the angle grinder to my Bayou Classic stand, and modified it to hold the hurricane. Brewed a batch of ESB today...came to a rockin' boil in record time, and the bottom of my kettle is clean enough to eat off of. We happy.