Quick timing guide: 1. Wind the LPR adjuster out (anti-clockwise) until it no longer cocks, then wind it in until it cocks and fires every time, then add another quarter to half turn to be sure. 2. Put the gat in safe mode and plug it into the PC. Set the fire mode to Semi, shot and dwell to 5 or 6, load to 1, open and close to about 12. Turn off "ACE mounted" and all the ACE options for now. 3. Go to live mode, and pull the trigger once at a time. See if it cocks every time. If not, increase open by about 3ms at a time until it recocks every time and add another 2ms to be safe. Open time is now set. 4. Change the fire mode to Classic, then hold the trigger in so the bolt moves back. Release and pull once as quickly as you can (e.g. release with index finger then pull with middle finger.) Check that it fires every time; if not, increase the close time 3ms at a time until it does. Close time is now set. 5. Check for blowback up the feedtube while firing; if it is excessive increase the dwell 1ms at a time until it stops. (This seems good left at 5 or 6 on the halfies.) 6. Re-enable "ACE mounted", "Use ACE", "Use Trigger Filter". Leave "Use Feeder" and "Use LED" off. CTO adjust seems to have trouble as Simon discovered, you might want to leave this off. Set "Default Loadtime" to around 35 if you have a revvy, maybe less for a faster hopper (this is only used when you've turned the eye off. Leave Load set at 1. 7. If you leave "Eye Check Max" and "Eye OK Max" unchecked, then when you run out of paint (or the eye breaks) the bolt will stay back. To turn the eye off then, push the bolt forwards and then hold the up and down buttons until it bleeps. If you turn these options, the bolt will move forwards after a delay.