Just had rotting roofing felt replaced and some tiles aren't back to fitting butted right down to its lower row. The worst offender is top row , left to dormer, see pictures, although that tile is overlapping the tile below there is a 2-3" gap where the tile appears tilted up. The roofer came back but after trying to adjust the tile it didn't look much different and he said there's nothing wrong with that, even though I showed him a photo of the roof before he undertook the job. So am I being over critical about re setting the old tiles exactly back as they were, nicely all lined up vertically and horizontaly or could this be a future problem with wasps, birds, weather?