Scraping off old RTV when changing diff fluid, got a little bit inside the diff...cleaned most of it out but there are little specs that i can still see...not many at all...i mean like the size of a sand grannular and there are maybe 3 or 4 that i can see...how do i clean them out..they are in grooves i cant get to...is it ok to leave it like that or maybe run some clean fluid over the gears till its clean or compressed air? any thoughts?