wow tim!...incredible photos and many thanks...here is some additional info 
that is now better explained, thanks to you...I do not have the "L" shaped, 
nylon blocks on the underside of the Y carriage, as I now see in your 
photos...they were replaced by a previous owner with an oak wood and ball 
bearing set up that is a bit sub-standard for me (i.e. rube Goldberg)...I 
also see that the Y axis acme screw has it's own split nut...my Y axis does 
not have a split nut, just a solid, nylon block, with the 5/8-4 acme thread 
in it and attached to the router mounting plate...so there is currently no 
way to disengage the Y movement from the threaded rod...I can mod that out 
without much work with some of the extra parts I have, so no issue there, 
but I am glad to have seen it in your photos...I have already begun setting 
up the X axis on a linear bearing...and actually it seems it will be quite 
an easy job and at a nominal expense($120.00 +/- total)...it will not allow 
the carriage to be lifted off the rails and the tolerances(vertical and 
front-to-back) will be very tight and yet allow the carriage to slide 
easily...and the tolerances will be easily adjustable, if ever needed...I 
am also converting the headstock to ball bearings...it currently has some 
1/4", black nylon "pads" as a bearing, but I could see those not lasting 
very long, especially under heavier-than-normal loads...that too was not 
expensive, but will require jamming a lot into that small headstock 
"box"...but I have laid it out and it is doable...and I will be posting 
photos, of course...not going to go the full monty with this machine, as I 
did before, LOL...but just some needed repairs/upgrades that were 
necessary, and I thought while I was doing that, why not spend a little 
more time and make it a better machine...my intention is to use this 
machine for smaller work and leave the big guy set up to do the longer 
poles and larger work we do...and if I should ever get a manual, you will 
be the first person I send a copy to...again, many thanks...joe


>

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