I have a 90 year old home, which as seen plenty of settling. Steel
peirs have been put in place twice and the house is no longer settling
and remains level in all areas but one. There is a ridge in the floor
which doesn't seem too large, but when I put a laser level on it's
peak, the line hit the wall at about 5 inches. Yikes! This ridge is
due to a cinder-block wall that has the basement on one side and
crawlspace on the other and runs the width of the house. It doesn't
seem to have taken part in the settling process. If you go about a
meter to either side of the peak, the floor is perfectly level. I'd
like to fix this problem without replacing the floor. Any suggestions?

FYI...First time home buyer and new to all of this... I'm in trouble
aren't I?