Lot of info on other threads...i'm sure you 'd right?
receiver more sensitive than deluo?
Yeah, try staying still and getting the lock before you start moving.
Where is your reciever mounted? Usually the front dash works best.
Try holding it on the roof and seeing if it works better and if it does, then you know your glass might have a coating on it.
Simple things you can try, if anything your reciever might be defective, but try those things first.....