any issues with the blocks ? I have them but also have the snap pads and have not raised the jacks so the blocks are too tall- I only travel with 2 of the blocks occasionally as there are a couple places I go with really unlevel sites and need two under the rear jacks. waiting as snap pad is supposedly testing some riser blocks to compliment their snap pads. was contemplating raising the jacks up on hole and making a filler plate of steel to make top on Anderson blocks