Tim there is a three part utube video on RC collimation that could be useful to watch. The TAK scope is probably the besr tool you could have. I would suggest installing the focuser collimation ring, then adjust the ring to achieve centre spot - before you touch anything else. I used a laser in the focuser to align the focuser, centre spot, using the ring adjusters. After that the TAK scope will be easy to use to align the secondary.
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