Anyway, modifying your beatmania controller's turntable will allow it to move more easily. The increased sensitivity will especially benefit pinky scratchers who find that they aren't moving the turntable enough due to it being too stiff, but this mod is for everyone who thinks that their turntable would be improved by it being looser.
Step 1: Gather Materials
Phillips Head screwdriver (I used the one from a cheap multitool)
Something to cut on (not pictured. Be sure that whatever you use won't get punctured if you press down really hard (the newspaper I used unfortunately didn't work so well).)
Small container for the screws (also not pictured)
Step 2: Eject the Keys
Step 3: Unscrew the Bottom
Step 4: Remove the Turntable
Step 5: Cut Out Circles From the Wax Paper
First, tear out a large section of wax paper. Fold that in half, so that you will get two circles from one cut. Put that on top of whatever you're using to cut on (and if you use newspaper, please use a whole lot of it. I didn't and I messed up the tablecloth).
Next, place a circle onto the wax paper. Trace around it with the Xacto knife. Go slowly so that you do a neat job, and so that your Xacto knife doesn't slip. You might want to use some scotch tape and lightly tape the circle to the wax paper so that it doesn't move. I didn't though, and I held it in place just fine with my fingers.
Finally, remove your circles from the wax paper. Throw away the middle part, you won't need it.
Step 6: Tidy Up Your Circles
Step 7: Put the Circles Into the Turntable Assembly
Step 8: Reassemble the Controller, and Enjoy!
Enjoy your slippery and very sensitive turntable! The only side effect from this mod is that the turntable makes a slight "swish" sound when it is moved, but it's not that noticeable.