As the others have said, start with a thorough cleaning and collimation - it isn't as hard as it looks. I have done it and was pretty worried at first - now I just sit down and do it without thinking - and yes, my scope is really junk, so I have to do it often. It has not been set right yet!

Be aware that moving a scope from a warm house to a cold outside area to observe will often cloud things up - that can really mess up your vision! Best to take the scope out, let it sit for a bit.

Jack