I installed the TPE stator along with a new MOSFET R/R a couple months ago. Last night I had to pull the plate (tuxedo mod done) to correct a small oil leak and noticed that the stator is already black. Oil is clean so is not from dirty oil. Charging is still normal and everything works fine, just worried about the looks. Is this normal or does it mean the stator is heating up too much for some reason?