Exploding Torqueflites

Ok My First Concern Here Is Safety I Have A A 727 That I Build Blue Plate Clutches Full Manual Valve Body Everything Else Is Basicaly Stock...and Everything Has Been Working Fine But Now I Am Concernced.... I Figure I Will Run It Till It Blows Witch Is Probably Stupid But What Measures Can I Take Whats Better Blanket Or Shield.. And It Seems That It Is Theis Sprag That Is The Problem Mainly Worth It To Pull It All Apart And Replace It??