You could always upgrade to 1/8 diffs and not have to worry about it again. I up graded my Robinson Racing diffs in my t-maxx to buggy diffs. It is a more expensive way to go because you will need new diffs and bulkheads, but in the long run it will save you money and bench time...here's what I used
http://www.rc-monster.com/proddetail...LM18700&cat=45
http://www.rc-monster.com/proddetail...GY_DIFF&cat=45
http://www3.towerhobbies.com/cgi-bin...?&I=LXJBE9&P=Z
http://www3.towerhobbies.com/cgi-bin...?&I=LXLGU1&P=Z
Good luck!
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S