Well I think I realy and truely fixed it this time
, I removed the secondary to check the squaring of the focus tube and to also check the secondary position in the mount.
As I was holding the scondary up for a closer look the clip and the mirror fell out, the mirror bounced on the carpet and out the front door (I was standing close to the door with it open to let some light in), it landed on its face on the concrete - broke at least about 5-10mm of the top, two huge chips on both edges and numerous scratches, looks like back to the manufacturer - but don't know whether its worth it now
- the Mounts great - Too bad about the ATO, it must be jinxed or has had a curse put on it.