I'm not saying you have the wrong springs or that they won't work, or others haven't done it, but here's what I just ran into with a 99 fbody.
Customer said he's been through 3 starters and they keep breaking so he wanted us to install the starter.
Right away, I knew something was up, especially since he hasn't driven the car.
Found out that a cam and springs were installed.
The kid used an aftermarket cam and ls6 springs. I never got the full specs on the cam, but according to the serial number on the back of the cam (yes we pulled it and looked it up), it was about a 568 lift.
The car ran terrible and would back fire and hardly run when it was brought in. After we inspected, it appeared that the coils were binding.
Anyway, we tore the heads and cam off.
Most of the valves were bent along with pushrods, some lifters damaged; cam was installed correctly by the kid though.

Since everything was kind of screwed it's hard to tell, but when the engine was turned over by hand, it appeared the coils were touching and no room for spring compression.
Does this sound feasible?
Anyway, got new valves and the heads redone, same came and new 918 lunati springs; everything was fine after that.

Just check that and be sure, hopefully everything is ok.


As for the shavings, I've seen some Harland rockers hit some valve covers and clear others, if it's hitting, you'll have to grind the covers down, I know pita.

Do a quick compression test to ensure everything is ok before you go racing.