Reading about all of these wrecked threads irritates me no end. Why don't riders read up about such things before butchering their bikes? There's endless posts about seized exhaust nuts both here and elsewhere, even videos on YouTube about how to remove them. I've two BeeEms and never had a problem with the exhaust threads. Slice the old ones off if seized, clean up the threads, Copaslip then fit new nuts. Simple.