It could be a different wattage coil
Theyre either 100w ish or 200w ish usually. So if you plug in a 200 on a pid tuned/autotuned for a 100 that could cause it. And vice versa.
Its tough cause all the ones i made never had a problem besides that the auber is set to 700 stock and without autotuning the first start up can be scary. But after the first one i figured out to turn the temp down from the beginning and ever since then its been smooth sailing.
Id suggest everyone be careful especially during the dry winter because you can build up static and short stuff out. Probably not the SSR but the pid is probably susceptible to static discharge
@budbro18 Hey man thanks for the reply. I have two 100w coils for the Dabvenue which both run nice at ~710F on the Dabvenue. The same coils running on the new box require a setting of at least 200F higher (not quite 300, 910F+) to feel like similar heat. I am running the PID settings Auber gave for 100w heater.