A: The short confusing answers to your questions are sort of, maybe and probably. While I wouldn't consider a quart in 2500 miles excessive, it does indicate that some oil is being used. Normally, I don't get too worried until an engine starts to burn a quart in 1000 miles, so if the bike was mine I'd be watching it, but I wouldn't be overly concerned-yet. The answer to your second question is a bit more involved. When blowby occurs on an FLHR (or any other engine using a crankcase vent routed into the air filter), oil makes its way through the engine breather into the air cleaner. The oil is then pulled into the engine along with the fresh intake charge and burnt. Unfortunately, the oil tends to carbon up the rings and glaze the cylinder walls, resulting in a less-than-perfect top-end seal. Once this occurs the die is cast. The poor top-end seal leads to more blowby, which pushes even more oil into the air filter, which is then forced into the engine, creating more blowby and so on. Did this cause your problem? I honestly can't say, and with 42K on the engine some top-end wear is inevitable, but it certainly doesn't help. The problem from a diagnostic standpoint is that in this case, a compression test really doesn't tell you much. It only tells you that the compression rings are holding compression at cranking speeds. In fact, a little extra oil will only help them hold compression. Meanwhile, the oil ring could be shot or even missing entirely. The compression test would never show the difference. My educated guess is that your top end is wearing out. Chances are it will get worse over time. My suggestion is to monitor it carefully for the time being and repair it at your convenience.