Using Data Range with Floating Trap

Hello All:

PDF files always confound me.  While my PDF report looks perfectly aligned, I am experiencing minor data shifts when I create a trap line.  My trap is using a ".", included in a column of dollar values (eg. $12.89).  However, as I go further down in the column, the "." shifts a few spaces to the left or right, and the Detail line is missed in the table.

Can I define a Floating Trap to find the "." within a range?  In other words, the line should be trapped if the "." is between position 65 and 68?  I cannot go outside this range because there are other values on the line which should not be considered for the trap.

Hopefully, I am clear.  Thanks in advance for any help

Al