I have several 3000 Series tractors and have always found the decks kind of hard to R&I.
Found a way to make the job less difficult.
I was in hardware store recently and found some small 3 wheel castors that are designed for moving furniture. Not super heavy duty, but IIRC rated at 200 Lbs so should be strong enough.
NOT sure these are identical to the ones I got, but if not, they are very similar
https://www.amazon.com/9299-6-Inch-T...%2Bmoving&th=1
Pull driveshaft, rear pins and then "front hanger".
Lift rear of deck and slip one under the outer roller on each side. It lifts the rear of deck 1-2".
Put floor jack under the rear and jack it up all the way.
Attach a tie down strap to the deck and pull it out without smashing fingers or excessive effort.
The wheels on the castors are small so you need to have a smooth hard surface, but if you do, this makes the job a lot more pleasant.