Ok, so I live in the jungle in Costa Rica. I do all the appliance repairs in the area, so I've gotten good at what I do. Just so you know I've done the obvious tests.

This presented as a no heat issue. 1st I found that the dyer needed a LP conversion. Did that. Then I found the tank regulator was not allowing enough gas flow, fixed that. Replaced the coils still didn't work. Got another set of coils still nothing. At all times a very small flame could be seen at the tip of the jet.
And one of the coils was chattering. That's what prompted me to get a 2nd set of coils.
Now here is the catch. none of the coils are bad. All tested fine. I know cause I opened the gas valve and switched the stop valves that are activated by the coils. In every case the valve with the short stem would chatter. regardless of which coil I used. everything inside is clean and smooth.
Please don't tell me to replace the valve body. It's $180.00 down here if I can find one. I really need to understand this one.
My only guess is that the parts place gave me the wrong coils. (Electrolux 53039317750 Will these work?
Thanks for your help