Yeah, I've ordered the Park CC-2. I'm just really suprised the EX1 chain had stretched that much in such a short time. Like I say, I think by using the different modes rather than the gears I put additional load into the chain causing it to stretch prematurely.Get tool that measures 0.5 and 0.75, cheaper ones only do 0.75 and 1.0.
Given chain + chainring are about 10% of new cassette, I'd try changing closer to 0.5 mark than 0.75. Would be interesting to see how much longer cassette lasts.
I will keep a very beady eye on it this time round