every engine builder is different and has his/her own beliefs and theories on the build and what parts to use and not to use...point is there will be failure at some point on any given build even if u did 20 exactly one way and 20 another way...and then u can point fingers anyway you would like but it still failed and for what reason(s)? tuning is the most important thing on any build but yet there are many variables that can lead to failure on a motor...but great discussion and this could go on forever