g.l.amour is making a very good point there.... This design is extremely forgiving... so much so that I'm tempted to say that your somewhat botched up job
, might actually end up performing better than, if it had come out perfect.... I dono, just a thing about all those ugly and sharp edges and water flowing through it..... makes for a lot of turbulence....
and that is the be-all and end-all in block performance..... turbulence!
As for it being your 4'th go at it..... you are doing about 156% better than I had, at my 4th.... so you are doing awesome, by no stretch of the imagination....