Those engines, particularly in 600cc guise run very hot and like the 500s, try to pull the studs on the right hand side of the engine, splitting the crankcase on the way.
The Daytona winning bike ran 2 oil coolers and even then, the problem was present.
Maurice Ogier had a pair of reinforced cases made which needed finishing. He probably still has them.
My Cavazzin prepared "semi official " TT2 has beads of weld in the crankcase on the right hand side to try to prevent this.
Paul