Just changed out cams in my 12 rg from 777 to tw8-6 and now have no oil pressure. Competed install and fired up first time seen it had no pressure and shut down and thought. Only thing I could do is take it all back apart and inspected everything found nothing. Replaced all O-rings again for good measure and reassembled with same results. Even tried pressurizing crank case to no avail. On way home got thinking maybe sender is bad will check that tomorrow but I aint that lucky lol. Any ideas or insight would be appreciated as I'm fresh out of them.