Has anyone RMA'd a maximus/rampage after yanking off the stock cooling?

Does ASUS care? I'm just curious if I need to keep the old heatsinks/heatpipes in good shape in case I need to RMA.

I'm guessing they don't care since these boards are designed for overclocking, and most watercool the NB.

Could someone share their experiences with RMA'ing their modified maximus/rampage?