I sold Solton/Ketron in Ireland from 90.s up to 2002. They gave me a lot of small problems. Musicians means of transport etc had them coming back to me. I brought a brand new SD1 to Lanzarote with me 2002. It has given me disc problems there also and it is rarely moved and then omly by myself. I think the problem for Ketron is Stability from crashing etc. Why would they hold back over 1 year otherwise. They cant Stabalize it. Good Luck.Collie.