i have found with both my blue spot bikes that the nipples weep unless done up way too tight for my mechanical sympathy. the service book says 6nm but i think that's a serious under estimate.
i also fit new bleed nipples as a matter of course when dismantling calipers or changing fluid as they seem to seal better. it shouldn't make any difference i know, it's just what my experience has shown me.
Thanks for the info, like you I was getting to the point when tightening the nipples, when I first discovered the weeping, where I was thinking they were on the point of stripping and stopped going too far, not only for fear of stripping the threads but damaging the tapered seat in the caliper, rendering the caliper scrap.
Strange only one caliper is weeping
Just need to find out if the threads are M7 x 1,0 or M8 x 1,25 then I'll order some.
I would have thought I'd have some sponginess at the lever with this issue but the lever feel was fine all day Sunday, even during hard braking from
speeds