Crap! Can't believe the 9 speed Taya chain on my TCR has stretched past the 0.75% mark! All this time I was more worried about the chain stretch on my more heavily used TCR composite especially because it's a 10 speed chain. It's been only a few months of minimal use? Thought I had it heavily lubed.... maybe I really should have greased it instead? or could it be the derailleur jockey wheels? That's one part I left unchanged, but the chain in that region isn't under significant load?

Luckily I found out now before it hit 1% chain stretch, else it would be another drive train destroyed...

Need more experience on how my bikes behave under my use and maintainence (or lack thereof).