As a musician and a builder i have only a rudimentary understanding of the whole endorsement thing
As i understand,the endorsment generally consists of discounted equipment,and depending on the public stature/success of the endorser,free equipment along with a legal agreement to publicly promote...
You have my sincerest condolences
I buried my firstborn six years ago at the age of 22
the sun will shine again,sparks will come and go,But time is what this will take
best regards to you and yours