Build looks like it's going great Marcus! And just to confirm, you can fit the heater output vents in the wrong way around,,because I also managed to do that too! Only realised my mistake when it went to BookaTrack for the post build and IVA,,and they said it was on the wrong way. I think it's not a big issue, it still works ok, and as you say actually looks more right the wrong way around! I believe the reason it goes in the other way,,is the smaller channels allow for some of the air flow to be directed down into each tunnel,hence keeping those areas by your feet, a bit warmer or cooler if you have it set to fresh air!