**bugger it here's the info**

The RHS reduces the crownwheel to pinion backlash but also combined with the LHS both of the caps together preload the diff carrier (side) bearings.

You can do it without any special tools, but mark the cap & case in 3 non-symetric spots.

You MUST count the exact number of turns when unscrewing the cap!

And upon re-installation count the exact turns in then align your three non-symetric marks.

if the lock tab isn't lining up flip it over there's 1/2 a tooth difference between sides.

A lack of preload will have your front diff sounding like mine (Cheers - Sik'em Rex & previous owner)......

Doug will know much more than me about this.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]