It looks like the oven elements needs replacing (heats up very slow and stalls at about 325F. Could you give me the part # -preferably a "Universal" brand as we don't have Dacor parts dealer near by. (If "Universal" does not exist, a common brand or the rating (W) of the element would help.
The issue does not sound like it would be caused by the element being faulty if the bake element comes on and the unit gets to 325. You would want to test the resistance of the oven temperature sensor. The resistance should be approximately 1090 ohms. If this checks ok then the issue may be a faulty oven control board.
Top oven bake element need replacement. This is an old model. Hard to find correct replacement part.
Answer Hello Bill,
The part number I believe you are looking for is Y0042158. If the unit needs the connections spread out, the part would be 77001092.