Okay...I sourced an original movement ring so replaced the Raffles ring and added a better quality Raffles bracelet. The Tudor movement ring has a slightly different angle on the side so it is tighter getting the clamps into place and screwed down.
The Raffles bracelet was far better than I was expecting, well put together and crisp and clean...when fitting one of these to a Tudor case all one has to do is follow the top curve of the end pieces with a dremel sanding drum ( carefully ) 'til the end piece fits the case and the spring bars clip in to place, no need to touch the bottom part of the end piece.