Looks like a propane gas flow problem!

Looks like a potentially dangerous issue! Glad you spotted it!

I think propane is scary stuff - good thing they add that scent to warn you of a leak. 

Good morning Tom Arstingstall, General Contractor, Dry Rot, Water Damage Sacramento, El Dorado County - (916) 765-5366 those homeowners are fortunate that you found it and corrected the problem.... and your thoughts on the life of the unit makes sense....

Good morning Tom,

I learned something from your post today.  Great information you presented.

Best of GREAT success to you always!

Another example of why I love my all electric home.  Propane would be my only solution for gas.  No thanks.

Good morning Tom,

As we have a lot of propane users in the suburbs this may become a useful tidbit; thank you.

Make yourself a great day.

Good morning Tom. There are some things I have never seen but would guess there are problems with. You however have to fix this stuff.

I don't like dealing with propane. Bad experience in my family when I was a kid. I don't even like to reignite the pilot light on my water heater. Glad there's people like you to spot these dangerous issues!

hey there  TOM ARSTINGSTALL,

well, that is a problem indeed, and it should be taken action as it will be a huge problem later on.

have a great day!

Isn't that one of those new 'low flow' valves?   Just like they use on water faucets and toilets?

That is a big problem for even if you clean it out, the small dust can still plug the fine orifices

Good morning Tom. I do not think that I have ever seen sediment build up like that.

Tom, whether it's found in a gas line or an artery, atherosclerosis is going to eventually  hinder the performance I would venture to say.