Hi all,So i bought a custom upgraded Tokyo Marui Devgru. I went to a game recently where the site fps should be around 328 and the max upper limit should be no more than 350 (it chrono at 353).I don't have much tech knowledge and i was wondering, would just changing the spring help? im hoping to get away with dropping it 10fps. Unfortunately, im not sure what other upgrades are in the gun and the original post is now gone. How easy is it to change the spring in this gun also?Thanks all for the help in advance!