Just to confirm my further testing, in-car this time. All working great, even headlight toggle works flawlessly

Thanks to the empeg guys for investigating (and providing a fix!) It will be interesting how many others are affected and either perform this fix themselves or get support to perform the mod (assuming they will accept this as a warranty repair)

My final question is though, what component(s) affect the timing enough to cause the problem in a small number of players, and be temperature dependant in some cases?