Originally Posted by flyinion
This can vary (slightly) from batch to batch, as i'd assume AC doesn't make them inhouse; variances, an ever-present factor in all this.
However, unless you have a mounting solution where the exact torque required is both specified to you and controllable (by you)? Stiffer is better than loose; you want them to maintain that tension, even after multiple uses; and i'd remind here that the nature of springs is such that the longer they remain compressed, the higher the chances they will be unable to expand back to their original state once released (meaning a problematic mounting). Stiffness is a factor in this.
TLDR, if it works, all good.
For the future, this is something you worry about only when the mounting mechanism as a whole isn't made so as to prevent over-tightening; but if you get to that point, you bought the wrong stuff anyway, so..
* And buy some tools. Seriously. Sweaty hands, i don't know, feels wrong but i went at it anyway signifies a wrong approach/mentality from the getgo; buy some good tools now, before you snap something you're unable to repair or salvage. One time purchase, think of it as investing; which you are.