Minecraft Junkie

So i have my nice pick and it is allmost broken. So i get some diamonds to repair it. Than once i repaired it said "The power of the pick or something wore off" and all my enchantments were gone. Now i was told by many people to repair enchantments with mcmmo. And i guess that didnt work cause now it is a regular pick :/. Please explain if it is suppose to stay or go.

Thanks

I guess now i can't give away the ores, sorry guys i will give other stuff though

if you type /repair to see your repair stats you will see in there what your chance is of keeping the enchant when repairing. its not 100% but the higher your repair skill the higher the chance the enchantment stays