Sorry @I_am_Bot for reposting this level. I just want to fix the instability issues with R. Thanks to @Ray Aznable for the test play and for recommending me to use autoslider to stabilize R. What the autoslider does is it places R in the center of the block everytime R walks off-center on the block.
... thanks for the honor, to test it beforehand. always love to see ur new innovations, simple yet entertaining. I like the design touch beside the center gate.