My Tournament 205 has an outdated flushmounted Lowrance chartplotter/sounder in it now. I've been looking at a new 7" Garmin 760S which seems really neat. But the hole in the dash that will be left when the Lowrance unit is removed will be a little bit larger than is called for by the new unit. How is that handled without it looking jury rigged? I don't want to bring on the bad karma that must surely result if one fouls up the looks of a GW in any way! Thank you.