Do i need to change the spring to adjust the front high low so called adjustable suspension ?

Its on a Kenari with a 2.8kg spring (on pervious owner) and now put into my kenari it was too low til it hit my fender and bumper was gliding thru bump.

so i went back to titan and ask them to make the front higher, titan boss mr.richard say have to put in a spacer in the spring and adjust it higher.... he say that is the most fastest and cheapest way. (but not safe lar, i think!)

another way ...