XRAY - Model racing cars

I have just installed a new xray gear diff in my 011T3. I used to have a Spec R gear diff in it and with that diff it was needed to use the 50mm drive shafts. My question is, am I better off using the 50mm or 52mm driveshafts in the Xray gear diff? Ive used the shorter 50mm drive shafts in the front with a spool and they have a tendency to break outdrives because they are a fraction too short.
Is it the same with the rear? Am I better off using the 52mm driveshafts? I'm thinking yes. Any help will be greatly appreciated.

Cheers

The rear's don't have as much load on them as the fronts so you can use either

I wouldn't use 50 mm in the rear, because in theory 52 mm gives a more stable ear end. So the best combination in my opinion is 52 mm in the rear which gives a stable car in the back and 50 mm in the front which gives a more aggressive car in the front. Note that this varies from different driving styles and personal preferences- if I remember correctly Hagberg uses 52 mm in the front and 50 mm in the rear

Alexander Hagberg answered about in old post.
Pier