Have run into these a couple of times. I have the proper tool. But on
the part I am working on it seems as if both bolts have the Torx t-20
head, but it looks like one bolt has some sort of gray cap that fits in
the head that prevents me from getting the bit into the slots. The
other bolt had no such covering and came right off.....

Anyone know about this. I don't want to ruin this $300 part by screwing
up the bolt....