A wee trick, that might work although I never did it myself so not sure exactely how much difference it makes. Originally the threaded end of the bolt on the dogbone sticks out towards the exhaust and often knockes against it, especially with if the mounts are tired. Think it might be best to reverse the bolt so the head of bolt is on exhaust side, might prevent hassle in the future. Exhaust hitting driveshaft is common, mine does it occasionally, even after new mounts, it is a good idea to put new rubber mounts on exhaust, as it helped mine no end.
Alex M