Compressor - Attempt at Photorealistism

Hey there! I’m new to Blender Artists, but I’ve been using Blender for about 4 years now. I’ve just finished (at least I hope there’s nothing more to do) my latest and most demanding project. I modeled my little air compressor and and created all the textures (except the woven metal textures on the hoses from from scratch in Inkscape. I’ve been sitting on this for the last 4 months or more every now and then and recently found motivation through unbelievable boredom due to Corona. It’s my best attempt at photorealism yet and I wanted to gather some feedback, so please enjoy!