I have delayed this feedback because of the trouble I have had with your tracks. I installed the new tracks and picked up the old tracks and drove the machine 25' out of the shop. I turned to the right and drove another 25' to drop the tracks. I started back to the shop and the right track fell off. I used the boom as a crutch to get it inside the shop. I couldn't find anything wrong so I pulled all the rollers and machined extension rings to extend the roller height from 3/8" to 3/4". I hoped this would fix the issue. Saturday (25th) I sent the excavator to install a 60' sewer. The track came off before the job was completed and came off again as it was being loaded onto the trailer This was the first time that I saw a track come off to the inside (both front and back). I have four of these excavators and all of them have 230x96x34 tracks. I have never had a problem like this before. Possibly the tracks you sent are for some other application. I have pictures to share if you would like. I need any information that you might have that will alleviate this issue, as this is not acceptable. Dave Hebard 806-324-9541.