Nambra
Definitely should have gone to specsavers
The serial numbers on the callipers will tell you the year they were made. Look at the first number after the 'T' in the serial number. A 6 means 2016, 7 is 2017 etc. A 6 or 7 and you're good to go, provided you can find a LBS to help you. Failing that, replacing the internals is a fairly simple process - Link might be able to help you out.thanks for the reply guys, sadly i cant find the receipt / I bought the bike on sale while on holiday in New Zealand.
I might see my local bike shop and see what i can do, so far the Xt's have been good but i miss the modulation of the Sram's.