I went riding in a fairly wet area the other weekend and sometimes when I splashed through a water crossing my throttle would stick. I could quickly blip the throttle and it would idle back down. I have done a leakdown test and found no leaks. I never went through any water deeper than my footpegs. I have a stock carbs no torrs, airbox with no lid and a pro design air filter with adapter. What is causing this and what should I do? I am currently looking for a stock airbox lid, do you think that this would help?