Looks like the drawbar placement would be a problem with many tractors.
Here's a photo of a square ballast with the drawbar forward
http://www.tractorbynet.com/forums/...ballast-too-much-post4123841.html#post4123841
And here is a centered drawbar but the weight is tapered.
http://www.tractorbynet.com/forums/yanmar/257768-tractor-wheel-weights-post3003289.html#post3003289
Bruce
Here's a photo of a square ballast with the drawbar forward
http://www.tractorbynet.com/forums/...ballast-too-much-post4123841.html#post4123841
And here is a centered drawbar but the weight is tapered.
http://www.tractorbynet.com/forums/yanmar/257768-tractor-wheel-weights-post3003289.html#post3003289
Bruce