You will be lucky to get a better fit than that unless you can find some original Renault wings, which is unlikely these days. Installing new front wings really needs everything to be slackened off and pushed and pulled around until it fits. I bolted up the angled flange bolts first and then loosened the bolts that held the inner wings in place onto the chassis rails and the cross member before tightening down the three top mounting screws. You can then tighten everything down again and it should all fit together reasonably well, the only difference being that you might have to shim up the bonnet hinges to get the alignment at the front of the car.