My Mojave 4s center driveshaft bearing wouldn't fit in the stock location as the TP 4050 that I've installed is slightly too large to fit the bearing in the normal spot. To fix this, I made a custom mount that securely holds the driveshaft bearing in place. Note that the fit between the bearing and center driveshaft will be loose as it's now further down the driveshaft. To combat this, I simply wrapped some electrical tape around the driveshaft and it fits perfectly now.