Shahinian Obelisk Overhaul: burn-in period?

Hello to all fellow audiogoners!

I understand there are quite a few Shahinian owners here. I also saw some posts of the owners who had sent theirs to the manufacturer for an overhaul: bass driver replacement, midrange, tweeters, crossovers, etc.

I haven't had any Shahinian experience before getting my pair. So far, after two weeks of constant playback, they have indeed improved, but I still am not happy with their sound.

How long does it usually take for these speakers (with new polypropilene woofers) to burn-in?

Thanks for your advice.