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Hi Don,

I think you can get significantly better/lower error rates by switching to the HP-worm and new OPW on the RA axis only. This runs about $275 plus shipping, well worth the money. I say this not because the HP-worm itself is so much better than the old worm (depends on which version worms you have) but because you will save so much time messing with trying to get your standard 2-piece worm setup not only square with each other, on the same axis and under enough bearing preload on the axis of the bearings that you will sing out loud. Of course people will think you are nuts but if they are out there in the dark with you they should not be throwing any stones if you know what I mean. That's the trick and it is very hard to get just right consistently and your gear mesh will change as temperatures rise and fall. IF you get the gear mesh just right in the daytime when the temps fall as they tend to do your geartrain will slowly get tighter and tighter until the RA is lagging and ultimately stalls. This is very easy to resolve with any of the OPWs, you just loosen the fastener on side of the OPW and give the adjustment screw a nudge and snug the fastener down and you are GTG. This take less than a minute to do. and the bearings will always be perfectly aligned and under the correct preload.


My advice is that Scott know these mounts very well and has had to repair every possible yahoo's "improvements" to his mounts out there. Trust me when I say don't try to polish the worms, there is much better low hanging fruit which cause a lot fewer issues if things go sideways. I mean it's a lot cheaper to buy the HP-worm and new OPW than it is to also have to by a new worm wheel because you over did the polishing job or it wore through the anodizing and the worm chewed through the alloy worm wheel.


Chip