Anyone can guide how to mix sika 107 with balance? Sika guide is to mix 5kg susu with 20kg cement to achieve slurry consistency. Since I'm working alone have to mix bit by bit. Common problem with this is the susu finish first and left with cement. So any sifu can share tips and trick? I'm applying on concrete deck above car porch. Already cleaned the surface and repaired cracks with Sika Crack Seal.

TIA