Hi all, we have a Kenmore Gas Range (3 years old, model#: 73221) and
for some reason the oven knob seems to be wiggling kit-valve &
regulator NG part (part number: WB19K10002) seems to be wiggling (not
the "knob" that is wiggling, the part connecting to the knob is
wiggling). I'm not sure whether we need to replace this part or not.
Here are my questions:

1. Is this part (kit-valve & regular ng) by default wiggling in
nature?? Or something is wrong with it? Is there any way we could test
whether this part is dead or not? Is this the part that usually go bad
in a typical gas range??

2. Is it possible that JUST the knob that need to be replaced?? Right
now as the regulator is wiggling so it is difficult for us to put the
knob back in place, so I don't know if the regulator is actually still
in good shape or not. Any suggestion or comments?

I really don't want to just dump this gas range for a new one, as it is
only 3-years-old. But a regulator part would cost $80 +s/h (see:
http://www.appliancepartsworldwide.c...aspx?Id=689510) plus
labor around $80 - $100, it would cost us around $180 or more to repair
it (if it is the regulator that need to be repaired), while a new gas
range currently is on sale on homedepot.com for US$299. The thing is
all four burners are working great, it's just the oven that is not
working. Any suggestion? Thanks!