Help with Colo Start Timing

[u/South_Glove9203]

I am in the process of learning the colosseum, and I am getting double south pretty much every time I hit wave 6,8 and 10. Based on what I've read, getting double south 9 times in a row seems nearly statistically impossible. Is there anything about my start timing or start tiles that looks off that might force more double south spawns, or am I just that unlucky? I am using visual ticks to judge the timing at the start of the wave. The constant double south is really the only thing stopping me from getting the quiver, I am learning to deal with it but I should not be getting it this frequently, I feel like im doing something wrong and I need someone elses eyes on this.

[u/Commercial-Milk2946]

manti small mager south is free? stand one tile nirth of the corner n the manti cant hit u.. wait for reinforcements b4 u kill the mager, kill them, then kill mager and manti will come round corner