I have the wonderful Infiray Saim SCH50, so P&Y, Skinney, Kirsch ... we basically all use the same fantastic Infiray 640x512@12micron sensor and the same 50mm focal length lens. Among our devices, only some features change, the software and the attachment to the rifle. But the performance and magnification are the same. I have never had a thermal device (scanner or riflescope ...) with which it looks as good as with this fabulous Infiray Saim SCH50. I think only the brand new Infiray Tube TH50 will be slightly better ... On the last day of hunting I was allowed to shoot roe deer at night, because the planned shooting rate had not been reached (5 roe deer were missing ...). With the Infiray Saim SCH50 mounted (fixed with the stock attachment) on the Picatinny rail of the 308 caliber semiautomatic rifle Benelli Argo Amazonia Green, I shot, in total darkness .... I took the first, which was stopped at 110 yards, on the neck ... the other 2 ran away very fast .. I threw 3 shots and took them both, even if they ran faster than your coyotes .. 3 kills with 4 shots, (Hornady Superformance 150 grs sst ... 3000 feet / second ....), impressive !! I could say that the Infiray Saim SCH50 (which I remind you is practically identical to the Bering Optics Super Yoter ...) is a real "war machine", the gamekeeper had never seen such a thing ... in total darkness .. .. Therefore P&Y I would recommend that you have the Rico 640 replaced with another one under warranty. It seems almost impossible to me that there are problems with POI, adjustment, brightness, contrast ... You may have the misfortune of having a faulty device. Change it to warranty and give it another chance ....