I'm not familiar with the space being added at the front. Are you formatting it with a string function? Are you doing a left-justify on the field? Or are you simply dragging and dropping the numeric field onto the form? Not sure where the problem is being derived from.

Unfortunately, I can't mimic this behavior on my computer. However, if you want to experiment with it, here are some functions you can use.

CStr({field},"#") - convert a number to a string.
Trim({string field}) - trims the spaces from both sides of a string.

If you check out my CR Encyclopedia book, Chapter 6 lists all the built-in CR functions and gives examples of how to use them.
CR Encyclopedia