I have an interesting situation where three hollys are leaning heavily to
the south. They are on either side of the steps up to the house and the
other side is straight. They only get afternoon sun. I have tried tieing
them back to the railing with landscape tape, but to no avail. I keep them
topped out at about 7', it seems the shorter they are the straighter they
stay. I would really like to grow them another foot or two.

Who has an idea on how, or of these can be straightened?

Thanks, Brian