Probably a dumb question, but how are you using the wood block? I place the block flush and square on the hub cover and hit it with a hammer. Just wondering if you might be hammering it in with the wood block. If so it is easy to get it started crooked. Once I have the block pressed against the hub and I am comfortable the alignment is good, I hit it a pretty good whack. Usually takes only 3 or 4 whacks to seat it. (I use a 2x4 about 18" long so my hand holding the block is out of danger.)
Mark 1:17 ...I will make you fishers of men