How to increase my Account Health Rating

I sell branded products that I buy from closeout specialists. Obviously, I can not get LOA and invoices from the manufacturer. Ive been selling on Amazon for 19 years & I get fake complaints regularly – its just a numbers game: more you sell, more fake complaints you will get. No way around it. Due to this, my Account Health Rating is at 204. One of the reasons my rating is so low is because my sell through rate is very low. Average price of my products are about $100. So 1 fake complaint really hurts my rating.

I have been thinking of ways to increase this Acct Health Rating and the only thing I can think of is to simply increase the units of products sold that will never get fake complaints. I figured the Health Rating is based on fake complaints / units sold.

Am I thinking of this correctly? Will increasing the units sold that does not get fake complaints – ANY products – increase my Account Health Rating?