Just upgrade to a keggle myself. I was brewing on a SP-10 burner and also upgraded to the Blichmann. I will say that the keggle didn't sit too well on the SP-10 even with a grill grate but the SP-10 did get it to a boil. However, the Blichmann is so much nicer than the SP-10, quiet, stable with adjustable surface, very easy to adjust the flame for maximum efficiency. Its also made of stainless steel, so it will last quite a long time. It was well worth the investment in my opinion.
Draft 1: Lightly smoked Weizen
Draft 2: Belgian Wit
Draft 3: Rauchbier
Primary 1: German Scwarzbier
On Deck: Belgian Brown Ale, Pale Ale, Stout