Is there a document that lists all the different M28 reperf "LPR" models and  what is different about each?

I'm working on a TT-253A (thanks to Nick!) that does not have a standard reperf in it.  The TT-253A is supposed to use a LPR53AWA (full perf, tape feed out, backspace).  What is in this unit is a LPR13XXX (chadless, tape feed out, no backspace). The unit punches fine (after I re-hooked up a spring in the Selector Magnet area), but can't check the printing yet due to missing print hammer (one on order from Nick).

In checking out the "Tape feed-out" function - the tape feed-out solenoid operates (and buzzes) and the ratchets turn but no tape out. I think this is the version that tape-out is suppressed by incoming message (there is an arm going up towards the SM armature), but can't see why it is not releasing the function clutch when running closed.  

Also confusion between different manuals about whether the tape feed-out solenoid is supposed to operate on 115V AC or 115V DC.  1963 vintage manuals (eg NAVSHIPS 94456) show TT-253A using LPR53AWA reperf with solenoid L5850 (TC # 274); 450 ohms; 115VDC. Wiring diagrams show the LTRK5 base with a series resistor & diode and parallel capacitor to supply the 115VDC. But this LTRK5 base has the resistor & diode replaced by wires and the capacitor removed.  

I thought that the removal of the 115VDC parts could have been a later modification. (Besides the change of LPR unit, this TT-253A had the power & signal lines soldered directly to the blue Amphenol 16 contact ribbon connector!) (I've ordered the mating connector)

Then I got a hold of the NAVELEX 0967-LP-616-7010 (APR 79) manuals and they show the LTRK5 base and LPR53 wired for 115VAC!! 

I'm getting confused!

The reperf in this TT-253A is a LPR13XXX, with a tape-out solenoid #252 and measures 200 ohms and it does not look like any of the drawings in any of the manuals. (Pictures enclosed)  I've read how the tape-out mechanism is supposed to work, but had trouble following it, especially in that my unit seems different from what the manuals are talking about.

When I energize the solenoid, the timing ratchets rotate, but nothing else happens.  I've tried pushing & pulling (gently) the various levers in the area, but nothing trips the function clutch. I'll put in the parts to put DC on the #252 solenoid, but I don't think it will affect the tape-out.

This dissertation was partly just to get my thoughts & facts together, but if anyone has any ideas about the tape-out mechanism, I'd like to hear them.

Thanks,

Duncan
K2OEQ