A while ago I posted about an RD53 I have which had the problem with the sticking heads. I have now got to the point where the heads no longer stick on the bumper, but the disk still does not work correctly. I opened it up and watched what it did with the cover off. Once it gains speed it moves the heads out all the way and then they just stay there with the disk spinning. There is a whine coming from the drive, not sure of the source of this though. Is this the right head behaviour? Below is what I got when it was installed in a MicroVAX 2000: KA410-A V1.2 ID 08-00-2B-07-98-90 ? CLK 0000.0005 NVR 0000.0001 ? DZ 0000.4001 00004001 00000001 00000001 00000001 00000000 00000000 MEM 0006.0001 00600000 MM 0000.0001 FP 0000.0001 IT 0000.0001 ? HDC 7730.7731 00022000 00000000 00000000 ? TPC 0000.4001 FFFFFF03 FFFFFF05 FFFFFF05 FFFFFF05 FFFFFF05 FFFFFF05 FFFFFF05 FFFFFF05 SYS 0000.0001 ?? NI 0000.7004 V1.3 I tried using the verifier thus: KA410-A RDver VSmsv_QUE_unitno (0-1) ? 0 VSmsv_STS_Siz . RD53 VSmsv_QUE_RUsure (DUA0 1/0) ? 1 VSmsv_STS_RDing . But the verifier just stuck on there and did not show any progress for a good 20 minutes or so, I believe an RD53 should verify in about 8 minutes. Any suggestions? Thanks Rob