Ah weel i have written to tennis warehouse europe staff, and in fact, they have confirmed that indeed the dumper set for the black ace 93 will not fit the redondo mid frame...
here is my reply
"Thank you for contacting Tennis Warehouse Europe. We have looked in to this matter, and while it has been said and believed that these grommets should be interchangeable for these two rackets, unfortunately we have confirmed that the Black Ace 93 grommets will not work for the Redondo Mid racket...."
Thanks to staff member Hilary Wighton that was very kind to reply to me in this matter...
But now what guys? where can i find grommets for my frame??