Hey Pete,
Good to see you here!! The box blade is working like a charm. Now if I only had a tiller... With regard to the ROPS, you made a suggestion that others have also been saying - tighten the bolts at the base to the torque specs. Someone here mentioned 110 ft lbs, so I did that (I have a torque wrench). As someone else said, all that did was to begin squeezing the outer tube to fit the inner tube (but not enough to take out the clearance gap, that would have required HUGE amounts of bolt torque, and deformed the tube).
Anyway, the day I bought the box blade, I checked out the 2910 you have there - with the same ROPS I have. It has the exact same rattle problem. Your comment was that they all do it, but readers of this board indicate that theirs generally don't rattle. Any thoughts??
BTW - As you probably already know, I agree that your extra attention is worth something extra in the price. I guess the art of the deal is to try to find what that extra value is worth, both to you AND to me.
PaulT