There is a minimum button size that can be made and that the program will allow (what exactly that is nobody seems to know). Some people here have made buttons with just a few pixels in the corners that don't show up on the touchscreen. Search the other threads on this forum for more info.

Also, if you don't want to see the MAIN page layout, send the buttons you want to MAIN1, where you can modify them freely, then you MAIN1 as your main screen.