that exactly what happen when someone use silicon on a 2 stroke ...
you need to split your case ans use case glue instead of silicon.
don't forget to fellow the manual carefully and use grease and locktite where it  need it.

I do not recall Suzuki recommending locktite anywhere during the assembly of any of their engines.  Rotax recommends using locktite in a few places on some of their engine assembly.  The need for using  locktite is usually a band aid for an engineering error in the selection of the thread pitch or type of bolt in the original design.

The use of loctite is often a error on the part of the engine assembler that lacks experience. They believe that by using loctite they are improving the quality of the engine rebuild and guaranteeing that nothing will come loose.  The assumption that nothing will come loose is usually correct but usually means that when it has to come apart someday for rebuilding, the threads are often damaged as a result of the loctite.  We are constantly receiving engines that have had loctite used on the bolts that hold the cases together, used on the bolts that hold the clutch cover and on the taper and flywheel nut.  Using loctite in these areas often adds hundreds of dollars to the cost of the rebuild.