Yoooooo,, did it on my own just by adjusting the screws and removing the black load support .
What i did is there are 2 screws on seat joint , removed them and shift it back on 2 screws. similarly there are 2 screws on each side for foam. remove 2 screws and shift it back also. you will get 2 inch space from each shift. in total 4 inches. now u need to cut the plastic sheets to fix them again . only i needed a dentor to slightly bend the joint as its whole was not adjusting. cost RS 100 only. and the whole activity done