I got a deal on an older tiller that I was able to retrofit to my GT225 by buying the appropriate lift linkage kit. It’s my first tiller so I wasn’t sure what to compare it to, but I think the tines are worn out or not installed appropriately. It leaves a 3-4” stripe of intact sod between each cluster, and there is at least that wide of a gap between the tine tips. I’ve found the manual for it and they appear to be installed correctly, but I’d hate to spend more on new tunes then I spent on the tiller to find out that the new ones are the same length. I’ve attached a picture for reference.