BE CAREFUL HERE. If the motor is cutting out, it can also be too lean. In this case, I would immediately return the needles to their stock locations and begin tuning again.

My motor NEVER cuts out because the HSN is too rich- it will have POOR performance but it won't cut out. However, my motor has cut out from being too lean on the HSN.

If my tune is in question, I just richen ALL needles and start over. It only takes a few mins when you get used to it.