I have just found a rotten seal which is a dust seal around the piston rod on the outside of the lever. I thought the "New M4" seal kit would have it in but I can't find one that fits the bill.

Anyone know of a tech lever blowout diagram?

something like this from the Hope site?

Awsome thanks Megatron 🙂

Yeh my M4 seal kit doesn't contain the HBSP216 – Tech Master Cylinder Dust Cover

Just emailed hope and its all sorted – 2 seals for free 🙂 I wonder if it should go int he M4 seal kit 😉

good stuff! 😀 I would have thought if it's one of the seals on the lever, it should with the lever seal kit. You've got me worried about mine now!
Thinking about it, the only time I broke a hope lever was on the really old "pro" lever on a set of C2s where I got a lovely swinging all over the place lever blade! 😆

Nah I think too much DOT and WD40 on the seal I reckon 😉

right, that's it! I'm never cleaning my bike! 😆