Hi,
I want one!
But I also was surprised how easy it was for me to lean back and adjust the top link on my B2910 from the seat when using the box blade I got a couple months ago.
Now I could not adjust it on the fly. I stopped and then adjusted and tried the new setting, and adjusted again as needed.
Having no prior experience with the box blade, from reading posts here I got the impression that I would have to stop and get off the tractor to make adjustments. No one said that, I just thought it. In that frame of mind I was happily surprised that I could make the adjustments from the seat.
My conclusion is that the hydraulic top link is not needed on the b2910, but I still want one and will probably either buy a kit or do it myself in the future by buying the parts!
I should also point out that I ended up with a cheap KK box blace, and that may change the equation, as it probably only weighs about 400 lbs, if that.
Bill in Pgh, PA