What made diffculity did the lilipations face while shiffting gulliver on the newly prepare vichicle to carry him?

From the text:

But the principal difficulty was to raise and place me in this vehicle. Eighty poles, each of one foot high, were erected for this purpose, and very strong cords, of the bigness of packthread, were fastened by hooks to many bandages, which the workmen had girt round my neck, my hands, my body, and my legs. Nine hundred of the strongest men were employed to draw up these cords, by many pulleys fastened on the poles; and thus, in less than three hours, I was raised and slung into the engine, and there tied fast. All this I was told; for, while the operation was performing, I lay in a profound sleep, by the force of that soporiferous medicine infused into my liquor. Fifteen hundred of the emperor’s largest horses, each about four inches and a half high, were employed to draw me towards the metropolis, which, as I said, was half a mile distant.