I enjoy mine too. I enjoy the temp control knob alot. I like to hit some nasties with high heat and light stuff with not so much. Do you have any more pics of your trailer install? I have mine in an Express.
I started out with a 421 and it's has been stellar! A well built machine. I have that same spotting tool box. I like. Very little problems with my unit over three years. Total down time under 8 hrs after three years. I bought it with 825 hrs.
The starter on my 318 has been sticking lately, Im thinking from taking on so much heat, it starts up every time but if it runs for a long time and I turn it off it doesnt start back up unless i tap the starter with a pair of pliers. Not a major issue but kind od annoying.