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Hi White Rabbit
I have just spent the afternoon taking the DEC apart, cleaning and regreasing it. It was surprisingly clean and pretty well greased but a lot of the allen key grub screws were rather loose. However, I did not find any obvious problem. Well it is together now and as you said getting the worm adjusted took a bit of time. The problem is when you have the grub adjusting screws right, the tightening of the silver holding bolts effects the adjustments. I gradually worked up to it and just barely loosened the bolts so that tightening them had less effect. Took the DEC for a spin around 360 degrees and both possible free play and binding look OK. However, the acid test will be how it tracks/guides on a star.
Cheers Peter
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