Hi, Just bought this unit is the one with the tines, not the knives. Kind of late to be asking now but how are the results when overseeding? The plan is to just use the thatcher and then broadcast the seed. I did my own lawn by just broadcasting the seed and had very good results. But if Im doing this for customers I want to take an extra step to ensure great results. Second question is will this unit destory the grass? When using this machine on the highest setting it cut, or should I say, shred a lot of the grass from 3" to 1.5" while taking out the thatch on the ground. Thanks for any help.