When I turn on my Hotpoint® 20" Compact Gas Range (RGA520EW2WH) oven, the electrode spark turns on a flame (not a pilot, pic attached) but nothing more. I've read about defective igniters (too weak to open the valve), but not about this issue. If the valve was closed, there would be no flame, right? I've also read how with basic ovens the cost of the replacement part plus the house call ends up coming dangerously close to the price of a new unit, but I resist the idea of changing the whole unit over this malfunction... So I figured the better I can "diagnose it", the more chances I have of fixing this for a reasonable price. That's where you come in... Any help would be appreciated!