T and T results

Well I changed my mind again. I kept with the 850 and put in new jets. 78 all around. It also has 5.5 pv's on both sides just incase the 3.5 was closing on the top end.
I turned the fuel pump on and set the floats. Seems to still want to wander at idle a slight amount. Could be the springs in the distributor, I'll have to get the timing light out and check.
When I shut the engine off the front side of the carb had vapor coming out, Is this normal for the holley? I seem to remember all the ones I had doing this.
Anybody use those plastic sight glasses? Pros/cons?
Mine apparently were tightened to much and the centers were white.
Went to take one out and it snapped in half. Oh well. I put a stock one back in.
Norm