I'm a bit worried about my front brake calipers on my MX5 MK1. I was replacing the front brake pads, and I had to push the caliper piston back in order to fit with the new pads. I used a C clamp to gently push the piston back, but after a few mm going back, it started leaking fluid.
Additionally, when I removed one of the pads, it was worn unequally, from left to right. Thinking about this, I remember that when I installed the old pads a few years ago, one of the calipers was struggling to get in, and the piston was grinding a bit on the back of the pad as I was pushing the caliper to close.
Is this an indication of a failing caliper or I should not worry and it is quite normal?