Quote:
Originally Posted by DarkArts
You may have to be a bit iterative as it's a fiddly job inserting shims, not to mention getting or making shims of the right thickness.
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Get a big flat screwdriver and jam it in between the glass and the corrector cell. Rotate it until you compress the shim opposite the glass and drop your cardboard shim in between the corrector and the cork shim. Repeat opposite, then do the quarters, then do the eights, always one in opposite pattern, like when you bolt a big flange in a star pattern. Do this flat scope pointing up. Do not drop anything on your primary and make sure your secondary is secured and in position. Most importantly do not overtighten the retaining ring when you're done, and screw it back in a star pattern again before securing it. Touch not tighten.