Re: 'The (almost) everything was not right bike'
you can buy an offset intake manifold from sickbike parts.
i'm afraid that jb weld is not the best product to use on an intake manifold. It may hold up for awhile but it will eventually break down.
your chain tensioner is HUGE and over complex,
you need about 1/2 inch +- up & down in the chain.
if your sprocket is not centered as close as possible, your chain will come off.
also, these are notorious for the chains going loose, tight, loose, tight as the sprocket rotates, due to the center hole in the sprocket not being exactly in the center.
just my opinions.