My mate is having the same issues with his Decoy SN, he’s waiting for motor 4 now but it’s been about a month. His would start off making a metallic tinging noise then eventually turn to a grinding noise.Oh no :/ looks like we were both unlucky with the replacements…
What Kind of noises you experience?
So Hw version 5 might be just hw version 2 for non-EU, maybe….
His bike shop seems to think the casings are separating when the motor gets hot and allowing the internals so misalign once it cools back down. They were saying they’ve been tightening the casing bolts after so many rides on their demo bikes and have a lot better luck out of them. No idea if that’s actually the case or not but evidently it seems to be working.