I bought a ballast box from NH dealer before consulting the experts on this forum. It has capacity of 400# total including the box when filled with sand or similar material, according to the dealer. After buying it, I read some posts here that recommend 700# or so for counterbalancing loader work. I will be grappling logs for bucking firewood that will probably get close to max loader capacity of about 1500# and moving large boulders when in the way. I see that kubota sells much larger capacity BB's and was thinking of returning my smaller box which has not been used yet. ?? Thoughts ??