TVS — tvs jupiter

My tvs jupiter is taken good care of and sparingly used for small distances. The two vents which are shown in added image are capped as it is always blocked by insexts with mud (Section 377😂). My scooter goes off suddenly while running anywhere, anytime without warning.
Had it not been for smiling good service for this problem by sai radha motors, koteshwara, by now my scooter would have been white elephant. Why did u make such vents prone to insects without a mesh-cap? Pl find a solution to my constant problem. As for now, it will remain like this😂 forever while parked. Let me see whether the problem is going to repeat again inspite of the 'new cap'. Let me repeat this has been my constant problem since i bought 2yrs back. Only now both vents have been capped. Tell me, what is an effective solution which the company can provide?