A couple of weeks ago the bike began to struggle getting into the 11 and 36t gears, fixed by fitting a new chain though this then caused awful chain jump in the lower gears, to the point one of the chain link pins bent Easily repaired with a KMC Speed Link. So this weekend the Grand Canyon AL SLX 7.9 29er has been treated to some more new shiny bits, well one, a rear cassette. I'm trying out a different chain lube. As much as I like the Muc-Off C3 Wet Ceramic Lube its a total mare to keep cleaning off cassette, chain and chain ring!!! Having read plenty of great reviews for Squirt Long Lasting Dry Lube I decided to give it a go ... we'll see how it fares over the next few months, hopefully it will be cleaner than the Muc-Off lube in wet weather which will help reduce wear in the long run. It'll get a good test next Saturday as have a 40 miler planned :whew: Cheap Deore cassette = mangled hub :doh: Already filed down once on a previous service a couple of months ago. Worn teeth! Deore cassette = no carrier. SLX & XT cassettes save hubs! (Low gears anyway ) New vs. Old. XT cassette expanded view. Shiny Newness.