hi i have a problem with my rebuilt blaster first it was poping into gear by itself but now i tore it apart and fixed that i have been riding it for a couple days now and the other day i had to down shift quickly and i heard the rear tires grabbing the pavement and skidding a little and then once in first she died this happened before and started up again in a bit now it will not start also before that i had bogged down in a lot of water and i had to shift down into first quickly to get out and regain control can some one please lend me some advice thanks,