Hi, can anyone advise on how to adjust a late-1950s (5A serial #) Smith Corona Sterling so lowercase characters line up with the upper case?  In other words, it will type all of one or the other in a straight line, but the upper case letters strike the platen on a line parallel to the top of the lower case characters.  I noticed that when I release CAPS LOCK the whole assembly drops a bit lower than it needs to, almost like it lost a spring that used to hold it in place.  I can slightly lift it up from below and get perfect alignment.  Thanks in advance!