How can i enchant heirlooms?

I have a little bit of problem with certain enchants. I’d like to use mop enchants on my heirlooms but they are upgraded to 4/4 so their ilvl is too high and i can’t use them with my main.

Is there any way to enchant them without a lvl85-90 toon?

I tried to decrease my heirloom’s ilvl with party sync but when i’m trying to enchant it then it still checks for it’s pre-scaled ilvl.