Thanks Dev One - aaaaagh the dreaded poly count! No easy way out; I started out being way too lavish in some areas and ended up re-building many of them 3 - 4 times until there was a satisfactory balance between smoothness and poly quota. It's all a great juggling act really...
Thank You, darrenvox
It's a common problem with new modelers when building parts to look good in gmax at 2-5' from that part. In the sim however, exterior parts are typically viewed at 20-30', are textured, shaded, "noised up", and low poly parts look just fine at those distances. Of course, in the VC, there are different things at play and high poly parts are more important, although difficult to accomplish in FS9.
Eventually, modelers find a happy medium where polys and part shapes are balanced and practical and allow for great viewing and good performance even in complex weather or high density scenery. We do have to be mindful that the aircraft is not the only thing being rendered in the sim and leave some capacity for scenery and weather.