Compound bow – leveling the different axes

I just got started in shooting a compound bow. The longbow has been my home of archery so far, however, several aspects of the compound bow got me into this type of thing and now I am shooting an Elite Impulse 34. Check my profile page for more/detailed information about me and my current bow setup.

One thing where I struggled with is setting up the different axes of my bow in order to tune my sight. I use a Shibuya CPX sight and a Cartel Xpert scope right now. I am pretty happy with the Shibuya but how to I level it? There are some magic devices out there, they cost a fortune. I was wondering if I should get one of them, but here is something way simpler. I just link the youtube videos for reference here. When I am building my devices, I’ll take some pictures.