XT M785 Brake Levers

[oldave]

Recently bought a 2012 BMC TF01 full carbon full bouncer. My arthritic fingers and hands love it!
Fitted new pads to rear ok but never having played with hydraulics, took it to local bike charity shop man for front cos pistons not fully retracting. Sorted that but in bleeding rear apparent that reservoir on left lever leaking.
Looks like needs new "separator unit" seal kit. Have the part number.......but none actually still in stock to be found. Anyone know of secret supplies of 13 y.o. parts?
If necessary, then as far as I can tell, modern Deore, SLX and Xt lever units will all work with the XT 785 calipers. Am I right?
Any and all help and comments gratefully received. I am clearly retro-minded......
Thanks, dave j.

 

[Tootyred]

https://www.amazon.co.uk/Shimano-Spares-Unisexs-8VC-9806/dp/B00DOTF1HQ

Like this?

 

[oldave]

Yes, found that - delivery next May but I doubt that they'll find it even by then!

 

[Tootyred]

I didn't see that bit! .

But that is the right bit. Which bit has failed...if its the seal, can a rubber be ordered just by size?

 

[oldave]

Don't know exact fail point, but presumably the ridged plastic part. My man said he didn't want to disturb it cos likely render it unusable. Reckoned trying to use a sealant could interact badly with the brake fluid. Braking power fine as is.....for now.
I'll recheck but I think the Shiman tech doc shows no other compatible parts.

 

[ishaw]

I've got some Deore levers of the same style I'm not using, you could swap over or pinch the bit you need from it?

Saw this, maybe a full lever swap could be cheap.

https://ebay.us/m/4ch05y

 

[oldave]

Anyone know if this would be OK as a complete replacement?

Shimano Deore BL-M4100 Deore, complete brake lever, I-spec EV ready, left hand

The SLX front shifter is attached to the brake clamp - so am I right in thinking that this is what I-spec means?

Sorry for my ignorance, knew I should have stayed in last century!

 

[oldave]

^@ ishaw, sorry crossed posts!

That full lever would be worth a punt, but it's a RH front and I need a left!
The reservoir cap/separator unit from LX is not compatible with the xt m785 as far as I can find.

 

[ishaw]

Yes, i-spec EV is one of the 3 I think i-spec options Shimano have created.