so the pilot not only lights but stays lit when you release the knob ?
the pilot warms a thermostat tube, which once warm opens an internal main safety valve that allows the pilot to stay lit AND the main burner to light. this is all done in the oven control valve assembly, which has like 4 connections (gas in, pilot out, thermostat in, burner out)
Mine is a RV-1735BBP, which they call model 35... this is on the stove top under the lid, between the two rear burners... remove the stove lid, then press the front edge of the stove top firmly back about 1/2" til the front lifts off, lift it up about 45 degrees and pull it towards you to unhook it from the rear.
here's the maintenance/service manual for stoves 33,34,35
it suggests several possible causes for your problem, including poor gas pressure, plugged oven burner orifice...
also has the parts listing.
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