Cyclemut...you seem to be knowledgeable in this area, so I have to ask the stupid question...

OK I hate to keep beating this one into the ground, but this has been bothering me. (Again, I know nothing about differentials. I do engine work on performance boats...not that much applies to off-roading ). Anyway, if the Lock-Right that is currently available is for the 31-spline version of the H233B axle, but still for the same axle, what is the real difference between the 33-spline and 31-spline (um...other than the number of splines on the axle itself)? Is the 31-spline carrier a different size? If it fits in the same axle as we all have, my guess would be that it's not. So what else about the carrier/3rd is actually different? Is it a matter of the bearings and races that pair up with the individual axles on the carrier that comes from the 31-spline axle? If so, wouldn't it be possible to put a Lock-Right in an open carrier from a 31-spline axle, and replace the bearings and races with those from a 33-spline?

Having never taken the 3rd apart that far (or doing anything other than changing diff oil, for that matter), this is boggling my mind. Please help!

Also...Porsche...is there a simple way to "reset the backlash" when reassembling the 3rd? (For instance, replacing factory open diff with a factory LSD in order to do some experimenting with the open carrier). Thanks for your continued help guys...one of these days my ride will be what it dreams of being