Hey Tim ! Back in the mid 80's when we bought 2 gyros from Bill Parsons, one thing he told me was that I'd want to get rid of the little Mikuni & replace it with the round one. So I got one from him.....it's still in the box, never used.
He said to install it the way yours is. He told me that the small one would fail & that the round 2 outlet would be better.
I always worry about my rectangular one, but I havn't even installed a rebuild kit in it yet. Bill said that it wouldn't just quit but that it would give you some warning.
Also people say that they should be mounted away from heat & vibration, but keep the pulse line short.
Well mine is mounted to the side of the motor with plastic washers(447) & I am yet to have trouble.
Every time I consider installing the round one, I get a little frustrated trying to come up with the perfect way to mount it. It will not match the 2 holes I use for the other one. So I use the theory ....If it ain't broke, don't fix it !
But this is one issue I am always thinking about. Also the electic backup would be nice.
Maybe we could get others to post actual pictures of good mounting & plumbing for different types of engines.
I will try to remember to get some pics of my fuel systems today!
Oh, & Tim ...you'd better get to bed because if you are like me lately, you'd be waking up in 3 & 1/2 hrs !!!!