Disklavier

Hello to you all.  My name is Peter and I have just joined the group.

I have a query which someone may be able to help. I have a MX100mk11XG
fitted with a DKC500XG control unit.   This worked very well until 
the Mitsubishi floppy drive failed.  A new drive was supplied by 
Yamaha, this time a Mitsumi drive. This was extremely noisy and was 
replaced by a similar but slightly less noisy unit.
All was well for a few weeks until this Mitsumi unit failed.  These 
are the extremely slim floppy drive units as fitted to laptops etc.
Qustion is: Has anyone else experienced problems with these 
replacement drive units?

Many thanks for your time.  
Peter(England)