Interesting, think I will stick with Gun Gum
As predicted all the bolts on the brackets sheared. And this is what was exposed when I removed the cover tube: There is no trace of any sealant although I know the previous owner used a lot, so I guess it has just all dried out and disappeared ?
And it seems quite secure. So I am not certain why the previous owner put the extra tube and clamps on except maybe for added strength and prevent any flexing ? My in initial thought is to now cover the joins with GunGum and bandage to seal it properly. I don't really care what it looks like as it is all hidden by the heat shield, but should I also add another tube and clamps over the top to be absolutely sure ?