Being a new owner (17 hours) of an L3400DT with a BH75, I've been keeping a <font color="red"> </font> very <font color="black"> </font> close eye on this thread. Not having seen what you're doing, I can't get any real idea of what sort of action you're putting on your hoe, but I've been digging out stumps by first digging "moats" around them--smaller stumps only require one setup and a 1/2 moat, and then I use the curl cylinder to see if it'll pop out. If not, I switch sides, complete the moat, and then pop it out.
What I've found to be the main problems are cedar and elm stumps. Roots galore! /forums/images/graemlins/tongue.gif The only solution I've found is to keep moving away from the stump until the curl cylinder can break the root; then I move back in and re-start the moat.
In doing it this way so far, I've gotten quick and shifted the rear end around only once or twice. If this is something close to what you've been doing, there are two possibilities: 1. I'm lucky or just working on borrowed time or 2. perhaps your dealer is giving you the wrong type cylinder?
When I went down to pick up my tractor, I took a couple of printouts of the pictures you posted at the top of this thread, and when the salesmann saw them, he scratched his head for a minute. I asked him if he'd heard of any possible defects or recalls on these cylinders and his response was "no, that looks like the results of someone trying to hammer something with the bucket." I am quite certain that you haven't been doing this, but I didn't say anything. I'm still a bit uneasy.
