I just changed to this so arms will get hit more often, once directly and once indirectly. See if it helps progress
1 delts, tris, calves
2 back, trapps, abs
3 ----------------
4 chest, bis, forearms
5 quads, hams
6 ----------------
I used to do this, great split but i feel arms are lagging a bit.
1 chest, tris, calves
2 back, bis, forearms
3 -----------------
4 delts, trapps, abs
5 quads & hams
6 -----------------