We ordered without the oven, as fulltimers we needed the extra storage rather than the oven, we've used the convection/microwave. The microwave has worked as good or better than the oven & I don't have to stand on my head to light it.
To be honest havent used the gas cooktop portion either in about 4 years, DW ordered 2 of the "as seen on tv" induction cooktop & have used them exclusively since, they work great. So if I could I'd replace the gas cooktop with another drawer.
Sorry, no help with the conversion!
Danny & Linda
Former '13 FB owner