OK, I can see why you might consider this gluing bit causing excessive clearance.
I see it a bit differently. Pressing 2 "flat" surfaces will cause them to contact each other on their 3 highest opposing points. I feel that the glue will be squeezed out of these areas and metal to metal contact will result......unless the glue has an extremely high viscosity which doesn't seem the case with 574.
The downside in not having glue are gaps which will allow oil to flow out from the thru bolt oil passages. Taken individually, we are not talking about much leakage but together that could be a considerable amount and every bit that passes thru these gaps is taken away from main & idler shaft bearings, not to mention piston squiters. Granted, we are talking gaps of some fraction of thousandths of an inch (WAG) but for hot oil at 6 bar.....
I just glued my case together this last weekend and ya got me thinkin'.
