If something is hard to do, then do it more.
Just some ACCESSORY Back and Bicep work.
Bat Wing Pull Down:
Medium with regular grip: 3x15x140
Semi Supinated Grip: 3x15x140
C/S Row: 4x15x45
Fat Grip V bar Pull down: 4x15x100
Elbows against the wall sitting straight up Hammer Curl: 4x15x20
Cable Curl (Duo/Poly) 3x24x40
Zig Zag Bar Preacher Curl: 4x12x55
Storming bike ride as a commute.