I went to the Tractor Supply site and discovered that all four stores in my area did not have a Mojack (Selling at $99) available.
I called the service number, and was told they are at a clearance price, and are not coming back...... "GONE".
Then it struck me, I probable have something to raise the front end.
I tested (for future use) and found that the steel car ramps I have will work very well when the time arrives.
I raised the deck to it's maximum height, drove the front caster wheels up on the ramps, put the brakes on, then slowed pulled the lower end points of the ramps around and outward way from under the deck. That created so much space for changing the blades. I was very pleased thinking I would not have to spend another dime to raise the front end for a blade change...