Hinterachsfeder Ranger?

moin i have a Ford ranger bj. 2000 and now for the second time both leaf springs have been broken back. today I ordered a reviewer to find out that possibly a stabilizer could eliminate this problem. I never load my ford more than 400 kg and as an off-road vehicle should not make out to him the condition of the local roads too much. terrain he hardly sees. is there anyone here who has the similar problems? I had asked at mazda, if there are also problems with the springs with the B2500. the local kfz-meister confirmed this to me and advised me to install an additional spring position. but that is not allowed without further, as then the operating permits expires (HILFEEE!!!) slowly the thing becomes a bit too expensive for me. ford rejects every fault of himself and I will now probably hand the thing over to a lawyer. fast post would be great thanks ifl