Product review (1 stars): Setup was overall pretty easy. The problem after installation was the large ...
Bought this to replace an 40 year old gaggenau cooktop as a quick fix before doing kitchen remodeling.  Connecting 1" gas regulator to 1" inlet nipple feel really loose and i had to heavily wrap it with yellow teflon tape. Setup was overall pretty easy.

The problem after installation was the large burner.  The inner ring would not lit, only the outer ring.  Is there a simple fix to this problem?
If not, I hate to disassemble everything and return the unit.

********update 2 weeks into using this stovetop**********
The main burner is the primary one we use,  flame is weaker compare to our old one.  How can i tell? it takes a long time for me to cook.  I don't get much of the sizzle sound when trying to stir fry, so it became more of a simmering style of cooking.....
makes me look forward to remodeling kitchen now.

********update 5 weeks into using this stovetop**********
The main burner now has the same problem as the old one we replaced, the burner is taking forever to lit.  We have to hold and press down the ignition for a long long time, and sometimes after its lit and cooking, the flame would randomly go out.  I'm still waiting for the reply from customer service we contacted several weeks ago.

******final update 6/1/17************
Contacted the manufacturer through email with a guy in HongKong.  He gave me a few suggestions to move around stove cap to make sure the thermocouple touches the fire when igniting.  Unfortunately I did all he suggested prior from the help of google and youtube.  According to the rep, I have a bad unit.  The large burner often times takes forever to stay lit and would randomly shut off by itself.  They won't honor warranty because I had purchased this from a 3rd party on Amazon.