I mean, i hate to be that guy, but at the end of the day, you bought Spyder for 80$... what can you expect for paying that much? The ACS only does so much, it still is nothing compared to having actual eyes.
I had a spyder pilot ACS that i got in a big paintball quitting package on craigslist... It was a decent gun for the money, and if it chopped a few balls here and there, i couldnt really get upset considering the gun cost me 40$. That being said, i sold the gun in a matter of a month to some guy for 80$.
My recommendation. Return the gun and/or sell it if you cant. Then find a used Ion for the 80$ you got back. Ion is still an entry level gun, but its worlds better than that Fenix you have.
Hell, if you take your time, you'd probably even be able to find a used 07/08 PMR for 80-120$, which will be a fantastic gun.