sand in spur

[Infest]

Well the x6 cubed was great out today at barham track drove great all day apart from a broken servo gears. One thing that for second time out side I killed a spur and pinion from haveing sand in it. I have a undertray and body is cut as tight as I can get it but its still getting in there. Is there going be an option part soon so I can get a gear cover as its getting expensive for pinions and spurs.