The only issue is the tensioner remove the spring off tensioner put it all together and use a high quality jublie clip the cheap ones snap, to compress the spring then put tensioner back on you need to compress it a massive amount, I never has a vice so I used 2 shifting spanners to stop the clip sliding off, as said above careful you don't damage the thread on the top nut, my was a mess it had been drilled out before and I suspect will need done again next change because of the mess I made of it.