Viking VGIC305-4B Gas Kitchen Range "vgic3054bss" Questions

need repair manual for Viking stove/oven model VGIC3054BSS to relplace the oven ignitors Turning on one burner ignites other igniters--how to fix the problem?

Have Viking range, model #VGIC3054BSS. Oven has a left and right burner. Only left burner light, stays lit foe a few seconds, goes out and cycle repeats. Does not heat up enough. weak bake ...