Originally Posted by
kyc992
Get your SSR assaults to SL4 and SR assaults to SL8. I forgot who but someone helped me out a while back ago, and the math was an SR with SL8 would be considered "neutral R" as a fodder. Meaning you don't get more mileage per R fodder used, but you aren't in the negative either. Once your SSR and SR are at SL4/8 respectively, get your LB2+ SSRs to SL20. If that is done as well, you have 2 options.
Option 1: Get your SR assaults to SL20 one by one, don't try to do them all at the same time. You will eventually get Assault SSRs which you can use to replace the lowest SR.
Option 2: Use R fodders on Grails and defender SRs(used as skill fodder), SL4 for R Grails, SL5 for SR Grails, and a mix of SL3/4 for SR defenders(that you won't use). These will be your fodders for leveling SSR SL.
Eventually you would slowly replace your SRs with event SSRs, and KH assault weapons that you further limit break with bricks from tower medal exchange.