Stable load question

Thanks. I am going outside to measure the space between the springs.The truck only has about 1 inch of sag so I hope this will solve the problem.

*Disclaimer* Mine is a 2001 with a different style of leaf pack.

However, If I remember correctly, each shim is 1/4 inch thick. I used 2 on on the front, and all three on the rear. The front 2 just slide under and make contact with no load. The rear is an inch away and likely only hits on large bumps. I wish the rear set was thicker, adn have considered making at least one larger plate to go under the stock ones.