Good question. I help a guy with a crate late model and we have ran into this problem. The first time we put the car on 4 link it walked the tail shaft seal out. We did have driveshaft shortened b/c we think the driveshaft was bottoming out or binding up. If we put it on swing arm it walks the bushing out. My guess is the bore for the bushing is getting warped or out of round. If there is anyone that has a fix for this problem that would be a big help. Thanks
On my Brinn there are 2 screws that screw into the seal from the outside that hold it in. Not sure if you could drill and tap the Bert to do this or not...
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