Following up on this after a few days. I cleaned up the calipers really well and blew out the bleeder valves with compressed air, no more seepage since then, so I think you were spot on for this one. Brake pedal is slowly getting firmer as the week goes on, I think the pads are working on bedding into the rotors again after I sanded the glazing off.
Got my 2 PS4S tires replaced this morning, so that's all set. I'll be working on getting a set of track tires and wheels before the next session in the fall...gotta do some research and find some 18's that will work on the P3D, and probably going to go with some RE71R or similar tires. Not sure yet if I want to stick with the stock 235 width or go wider. I didn't feel like I was out-driving the stock tires, so not sure if I'd see much benefit to going wider. The RE71R in a 235/45-18 is quite a bit cheaper than the NT01 in a 265/40-18, for example.
Can't remember if I updated this thread or a different one, but I ended up changing my brake order from just XT910 pads to the RB pad and rotor kit. Front rotors and pads should be here in early June, and I've been told the rears are still several weeks out.
