RE: POS CVA!!!!!!!
Some of the less expensive CVA's did come with a very poor quality fiber optic sight. My CVA Staghorn Magnum's sight cracked from the cold after only owning it a few weeks. Not a big deal. It is still hanging in there, and besides I put a Bushnell Trophy RED DOT on the rifle. Now this is a great deal.
Before I declare CVA a POS I would stop and consider what it is you bought in the first place. It was probably a low cost rifle. It probably shoots fine, just some of the small things about it upsets you. Well thats what you get when you buy some of the less expensive rifles out there. I own a few of them. I expect it.
I hope you have better luck with your Lyman. They are a great rifle.