I will be making sure. I will be doing a full system flush to ensure that is not the case. I would think if it was air in the lines, it would do it all the time and the peddle would feel spongy. :dunno:
The caliper seals are intact. That was one of the things I checked since then. All the lines and hoses appear in very good condition and there are no leaks.
Since this has happened, braking performance has returned to normal. Of course this is only in everyday driving well within the design limits of the braking system on the car. I don't plan to take it to the track anymore this year so as long as it gets me from point A to point B safely, that's all that matters. :thumbup:

I just want to be ready for next year! :driving: