Breaking in Crystalite faceting laps

Can someone tell me the best way to break in new 1,200 and 3,000 grit Crystalite laps to prevent scratching of the facers on quartz and harder gemstones? I have a complete new set of laps which work well but when I go to the above mentioned grits they scratch and undo the nice even finish left by the coarser grits.

Though others will no doubt have different opinions, but a common way of breaking in a lap is with a piece of corundum, the man-made stuff. Plenty of water and give the laps a good rub over to knock off the high spots then, following a wash, you should be good to go. Keep the rubbing piece for this job, so you’ll no doubt use it again on other laps.