So I bought a Losi Micro SCT and the first night I took it outside and got some sand in it and I thought Okay so just don't drive it outside. I took it to the shop and learned how to fix the problem. Last night I drove it around the house and it had a similar problem but this time it was dust and hair. Even though I know how to fix the problem (which is sorta time consuming) I would like to know if they're any hop ups and upgrades I can get or make to prevent the problem in the first place.

I would also like to know if there are any upgrades or parts from other vehicles I can buy to upgrade my car