Hi,

I just recently bought a Specialized Sirrus elite disc bike and I was trying to remove some noise on the front wheel.
I removed the pin that holds the pads (actually it is a 3 mm allen screw) and put it back. The problem is that I over tight the screw putting it back and I cannot remove it.
The brakes are Tektro Gemini hydraulic disc, the problem is on the front wheel.

What do you think my options are? Should I get a new caliper? Where can I purchase a new one?

Can I replace with another one? which one?

I looked over some places and I cannot find it, only ebay in UK.