After just less than 2 years I've started having problems with the transmission again, started off with clunking and a noise which sounded like a wheel bearing going but also when reversing on lock it was clunky and notchy, Had a look underneath and there was play with the diff 2 mounts were knackered so I changed all 3. Now took it for a test drive and there's a loud whining noise, possibly from the front. Took the prop off and the noise has gone. Can someone tell me what this could be? diff, transfer box and prop were changed less than 2 years ago, prop was a recon.