I am a fairly new stringer and have used only a prince neos stringer. I am considering purchasing my own machine and find that the ones that make the most sense (in terms of $) are drop weight machines (alpha in particular) w/ fixed clamps. I have read a lot about the need for the bar to get parallel to the ground and the inaccuracy in tension if it is not. I have never used a drop weight and it worries me to think that the quality of my stringing rests on me making what can only be a somewhat inaccurate call as to whether the bar is parallel. . . Is this really a worry or is it easier than it sounds. Thacks for any advice.