I find that the 6x30 finderscope that Celestron make is pretty flimsy and crap. I was trying to centre Sirius in the middle but all the screws were already tight. I un-tightened a few and started to turn them very slightly in a random order but it still wasn't that great. It feels pretty cheap. The red laser dot and GSO finderscopes I have used (or any with the proper dovetail bracket) seems much easier to use.
Would it best to stick using to this one (if someone can confirm it's a good finderscope) or look at getting a better one?
Does anyone have any issues with this particular finderscope or is it a classic case of user error?