Broiler works, Oven Doesn't GE JGSP30GEP2BG

The model number given above doesn’t agree with the "Technician’s Use Only" document in the stove. It says JGSO30GEP or JSGP31GEP.

The Broiler works

[INDENT]About 5 seconds after I select the Broiler and turn the control to High there is a click - the igniter is clearly visible and after another 5 seconds it begins to glow - after 10 seconds the gas ignites[/INDENT].

The Oven doesn’t work

[INDENT]About 5 seconds after I select the Oven and turn the control to 400°F there is a click - the igniter is not visible nor do I see any glow from the slots at the bottom of the oven. After a minute the is no sound of ignition nor heat from the bottom of the oven.[/INDENT]

Since the Broiler works it seems as if the problem is:

[INDENT]
[LIST=1]
*]the oven igniter
*]the bake relay on the ERC [Electronic Range Control] {the "click" suggest against this}
*]or…
[/LIST]
[/INDENT]

What other possibilities are there?

I have a volt/ohm meter. Are there any useful diagnostic tests I can make?

I am considering replacing the igniter - but am concerned about replacing the igniter within the tolerances given – plus or minus 1/16" horizontally and vertically.

Appreciate any advice or insights you can provide.