Hi mikeo,
I must admit that I'd not run the risk of using the engine block to pull the rail up as it's made of die cast which isn't that strong especially when there's a constant stress load put on it and also vibration. I would shim it up instead as that's less strain on all components.
I must admit that I like the following method of shoe horning that folded up section into the underneath of the rail and what's also important is the way the threaded nuts have been stitched into the folded gusset so as to strengthen the actual mount point better than original.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2015/05/full-5156-21990-full_6466_21980_imag1212.jpg)
The only downside to this is that it's a rust trap with ramifications to appear later on.
Cheers,
BB