help with mks-gen L and setting up firmware

Hi all i havent been on the forum in a while and the layout is all new. machine is a WANHAO duplicator I3 2.1 with mks gen l board and A4988 steppers currently loaded with marlin 1.1
I was getting help from someone with setting up my gen L board and last time i was here we managed to get marlin 1.1 installed as the firmware on said board with the reprap screen working. I do not understand programming as such and using marlin is not straight forward,but im trying to get through it. MY current state of affairs is i now have a printer that when set to go home moves the bed forward but moves the bl touch upwards instead of down to touch the bed so i have something wrong somewhere is there anyone i can send my firmware to so u can have a look through it and correct ?? or walk me through it slowly and with lotsd of patience :slight_smile: :slight_smile: