Just got a nice deal on a set of ’09 Formula T1’s. Rear brake is fine but the front needed bleeding. Removed the bleed screw from the caliper and there was only half an o-ring in there (sucked the other half into the syringe while bleeding!) and none in the lever bleed port.
Should there be an o-ring in both ports or just the caliper?

Is it a grub-screw looking thing with a pointy end, or a tiny wee bolty thing? Formula use a couple of different designs, if it’s the pointy-grub-screw the oring should be down in the body but is hard to see, if it’s the bolty thing it should be round the bolt. As far as I know they all have an o-ring but I’ve not done that exact year so I wouldn’t want that to seem like gospel

Caliper is pointy grub screw while lever/mc has a little bolt with a head.

Hmmm parts diagram shows an o-ring around the MC bleed bolt. Poo, not ordered on of them :(.

O-rings are needed for both ends. The calliper o-rings are tiny.

Find them here:
Formula O-ring Seals