Received a relatively old black and decker bench grinder from a relative. It works, mostly. About 50% of the time it powers up but doesn't spin - hand cranking gets it going, whether it starts fine or not it makes a dreadful racket for the first 10-20 sec. of operation. WD40 helps. Also, it seems like the wheels are off-center, ie they seem to not move in a perfect circle.
Is the situation with the slow start likely to result in imminent failure of the unit?
Is the situation with the uncentered wheels likely to result in damage to work?
Can any of this be fixed with some preexisting mechanical aptitude?