Hi Drew, The hose on the right( crank breather hose) on my L28 is just attached to the inside guard with a small breather/filter on the end. It's been assembled this way in both cars and is fine. On my rocker cover I also have a small breather filter. Regarding setting up of the carbs, if they were webers I could give you heaps of advice.You can see the filter just behind the first weber K&N fiter.If the linkage set up is similar to mine, you wind the screw on the control arms right in, then turn in each one 1/4 0f a turn. These must be set very closely. I then screw in the idle mixture screw( clockwise and gently) to the fully closed position. Then open them out 1and 1/2 turns. This normally gets me started. Then I start with the left side carb on each webere and wind it in clockwise till it runs rough, then back to the right to where it picks up revs and then find the happy medium. You can feel the change with each adjustment. This is only a guide to getting it running in a driveable state. I also get it checked with the balancing tool. Infact last time I was only a smidge out, the guy reckoned I had done a pretty good job. Don't know how similar your carbs are so this may be of no help. Good luck. Ricky