In my .vimrc I have:
set shiftwidth=4 set tabstop=4 set expandtab
set to use 4 spaces instead of tab when I hit the Tab button. But when I hit
You can try using ^T and ^D.
:help i_CTRL-T :help i_CTRL-D
These allow to insert or delete (more like backspace though) a number of spaces equal to shiftwidth.