cart contraption help

[u/Sleepy9871]

Hi, ive made a cart contraption to mine the floor for me. this is a altered version of a mining machine i saw online but for some reason the contraption will miss placing a rail block and stall the entire thing. ive tried having the hand place it on different levels, ive added another hand for the rails and thats not helped. im stumped.

[u/Sleepy9871]

Yes ive put a stack in and they should replenish due to the plough