1200 REAR Brake Master Cylinder Brembo

[BumbleBee]

Hi All, the rear brake master cylinder on the 1200 looks like it needs a rebuild kit. The rear brake keeps filling with air soon after every time I bleed it. Then this last time it doesn't want to pump hardly any fluid at all when I tried to bleed it. This is a 1200 Milano but it looks kinda like the rear master cylinder on other 1200/650 Morinis and it wouldn't be a surprise to see it was the same unit. I'm trying to track down a brembo repair kit but I've no idea of the part number (for master cylinder or rebuild kit). Can anyone help?
The unit has 8F07x11 stamped on the body.

[backfat1187]

These guys were mega helpful when I needed rebuild kits for various machines
https://powerhouse.uk/motorcycle-brake- ... seal-kits/