Hello everyone Long time reader of this forum, desperation made me register. Already read most of the sticky topics. I don't have a lot of experience modifying AEG but I wanted to upgrade my least capable gun, the APS UAR. I already have (not installed) a jefftron leviathan V3, SHS 13:1 gears and a Guarder ITU motor (18tpa I believe). In Portugal we have a fps limit of around 370fps with 0,2g BBs. I use 7,4v batteries 25-50c discharge I want to improve trigger response and achieve a ROF of 20 to 25rps. No more than that. My problem is that I do not know what to expect in the following situations regarding PME: 1. Just changing the motor and keeping the stock gears (18:1) with jefftron leviathan v3 2. Changing both the motor and gears with jefftron leviathan v3 Wanted to avoid having to short stroke it. Thank you all for the help.