Got the SES light again. However, I admit that I didn't let the copper permatex set for 24 hrs before returning to service (more like one hour, I just didn't have the time to let it sit), and I only re-did the y-pipe to HFC flanges. Looks like I'll have to pull it all down this weekend (have four new gaskets on order), and will apply sealant to all four flanges. Sigh.
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