Hi all.
Just received GB-303 from Kitch Bent rev 2.1. Looks like it has the same bugs from 2015.
Also found that GB-303 not work with DMG IPS screen (chaos controls).
LSDJ sync works time to time and async.
Speed of GB-303 not the same as LSDJ (if don't use any sync) I set 188bpm and GB slow down, looks like original bpm on 0,5 bpm less.
To play Song need to clicl SELECT + START +START
Song mode play like it has 16 steps and 1 step delay.

Nice sound but many bugs. But I'm still interested in final working product.