this is pretty random but i just signed up on pbnation and came across this thread.
i also had this issue after cleaning my SP1. Doing the following should
fix the issue
- Remove 9V battery
- Hold down trigger
- Replace 9V battery WITHOUT DEPRESSING TRIGGER
- Turn the marker on and confirm proper operation
work, its the little know tournament lock, i had a hard time finding out about this when it happened to me.
ive also see some "Rental" SP1's that people sell that are "Locked" to semi auto, and it makes me wonder if this would work for them as well.
Either way let me know how it goes