As almost all reviews say I'm having trouble with grouping because of rings and or bases. I've ordered and tried 2 rail bases. Savage Axis from Amazon and Weaver 413 from Ky. Gun company. The Weaver 413 is what their book says fits but it sets way too high on the stock end. Once I pulled it down with the screws it literally had a curve to it. Question, are the 2 piece bases it came with fine and the only problem is the combo rings or do I need to change bases and rings. Question 2, is it always better to use a weaver or picatinny rail or will 2 piece bases fine? Also do you guys always use Loctite on screws or just a good cleaning before mounting the scope?