Hey all, Moderators: I didn't know where best to post this. I would ask you to move it, if there is a more appropriate place for it. I recently got a Ten Tec 645 "Ultramatic" keyer to go with my vintage Ten Tec transceivers. It needed some TLC, which I mostly completed. I've got it working to the point of exasperation! It works reliably to about 10-12 WPM, and then it gets really flaky. I haven't owned an Ultramatic keyer in probably 30 years, until I bought this one. Yet, I believe I have a pretty good sense of how they should work and how they should be adjusted. I'm now at a point where I need some assembly drawings or photos before I want to go much further in dismantling it for cleaning and repair. I removed the PC board for inspection, and so I could trace out where the keying and power cable should connect. I'm not sure how the keying/relay/pressure assembly is assembled. I don't want to take out a screw and have a dozen parts free falling onto my workbench. I've searched high and low on the Internet for a manual. The various Ten Tec/RKR/BAMA, etc., sites don't have any schematics or manuals. I've found one manual, but it is credit card only, in a foreign country where I wouldn't trust sending credit card info. I don't think the keyer problem is my "fist." I can't tell exactly what it is doing, but after certain keying pauses and sequences, it seems to be adding and subtracting dits and dahs, and it seems to get slightly confused between dits and dahs when starting a new string of characters after sending a string of perfect characters. For instance, if I call CQ CQ CQ de K8KJG K8KJG -- and, after about a second pause, a new sequence of CQs is completely indecipherable for the first several characters unless I pause, and start re-sending the CQ. I suspect it may just be dirty contacts on the DIT/DAH paddles, but I'm reluctant to take it apart without knowing how the keyer/relay area is actually assembled. That is where I assume the issue is located. I can tell that a previous owner has made some component/PCB modifications. It also came without a power/keying cable. This all seems to be OK. So -- does anybody know where I can find a manual. Best yet, has anyone else run into this problem, and, if so, did you find a fix to the problem? Thanks.