Changing the positive/negative axis orientation

Hello,
Working on a gantry type home-built machine and all three axes home properly, but then two of them run in the negative direction to travel away from that switch and I would prefer it to be positive.
Various posts on this problem are on the net and after reading Homing configuration instructions and after reading and trying different things for a week there has been no progress. From posts, I cannot find [AXIS X]INPUT SCALE to edit. I cannot find a line 'set parport.X.pin-X-out' to edit by adding 'invert 1'. I tried changing the sign on axes in Stepconf and then the homing went wrong except for the Z axis. I tried setting the travel distance to a negative. And various combinations.
I notice that the axis readings after homing read negative values (-0.100) for the X and Y but Z is not signed and is 0.000 and that the values for axis length do not match the values stated in Stepconf for travel.
Attached are the .ini and .hal files.
Again I thank those that helped me with correcting the problems in driving two steppers in parallel and certainly will appreciate assistance on this problem.

Joe

Thank you for your prompt assistance. However, I have been gone for a few days so just this evening tried the suggestion and it is now running and I have tried a couple of programs which worked perfectly and am very pleased.

Joe