Guys, I need some advice here!

I got my bolt extensions and decided to put the blocks in. It wasn't very easy, but it wasn't very hard either. I cut and drilled the blocks, but I did not shaped the bottom and top. I left them completely flat and put them in. Do you think it's gonna be a problem? The original rubber spacers are on the top of the blocks, and the blocks are sitting on the metal supports. I'm kind of afraid that it will cause side to side movement and put too much stress on the bolts. Has anyone used flat blocks as well?

Two things to add to the "how to do a body lift":

I used a bottle jack and cement blocks to lift the body just enough to put the kia jack between the body and the frame and lift the body. That way the weight of the car is on the frame, pushing the suspension down and increasing the distance between the body and the frame without having to lift the body too much.

I had to disconnect the plastic intake duct (attached to the radiator) and the intake hose (attached to the MAF and the air duct on top of the engine).

Thanks