Hi fishing line mod is the BEST method period! it stops the twist up gearbox movement but also allows the whole gearbox to compress up and let the metal rod in the gearbox still push up in the side slotted plastic holders...nothing else lets this happen other than stock set up but stock you get the gearbox slap and with fishing string mod you don't,,, any other method stops slap when you floor it but then it does not allow the gearbox and suspension to fully get compressed upwards like the string mod and this is best for jumping the suspension works better.