Hi
i got a drag link from
here and it totally got rid of all slop... you may have to e-mail them though as there paypal is not working
regarding the understeer, i would fit a new servo first then try it,you can put thicker grease in the front diff(losi super grease is one)but at the moment would only make understeer worse
not sure how much your looking to spend on a servo but the Savox SH1257mg is really good and just fits the std mount with a bit of filing