Need a bit of guidance

so last night my buddy and i finally got around to checking valve to piston clearance. When we had the lifters, pushrods, head, and rockers installed, the pushrods were seated at different heights. I'm assuming this is because they are hydraulic lifters. as i rotate the crank, will they seat properly? i didnt want to try this without asking just in case i would damage something.

It's a 360 magnum with keith black pistons and i bought the longer pushrods off of scram speed.


also, the place i had send out my cam to have reground made it a bit more aggressive than i asked for. lift is around .550-.560 and duration is .282/.282. will i run into problems with valve guide/retainer clearance?