Welcome to TBN - Kevin. The 110 is a great machine!!
A couple of questions... are the chain sway links extended out? If they're too tight, the 3pt arms might not drop down completely. Also, is your 3pt center link adjusted (extended) out? If the center link is screwed in (it would be real hard to connect up to the BB) - but it could also hold the box blade up (the BB would be at a forward angle, too) and not allow the rear of the BB to completely lower to the ground.
Have you checked your 3pt rate-of-drop valve? It's the knurled knob just below the (mid-point) in the seat. That can keep your 3pt from lowering correctly, too.
AKfish