Hello Mark,
As we discussed before the purchase, the 45 rpm issue is due to the mechanism that moves the belt on the drive spindle being a little out of adjustment and causing the belt to walk off the bottom of the platter. Somebody on AK told me how to fix that one time, but since I don't have any 45 records, never messed with it.
Never had a problem with the tonearm lowering. Remember that I set it up to run with the brush "up" on the Shure cartridge. It the brush is not up, the needle will not contact the record, at least at the weight the vertical tracking force was set at.
The on/off issue happened when I first bought the TT. There is a ?relay? switch inside it that controls this. I sprayed some Deoxit in it. Also, IIRC wiggling the cueing lever a few times at the OFF position fixed the issue. I had forgotten about this because the TT had not done it since the initial fix.
Regards,
Scott