Guys , I used the blades from a Krause Exceiuator on my Great Plains Turbo-Till. does a lot better job, cuts trash better and stirsup the soil more even. went over alot of ours twice also because of tall weeds. used a disc and turbo till too work pretty good.
had the turbo- till 5 years now. works good in certain soils better than others tho. still chisel plow also.