I have a tinking noise coming from the engine. The lifters, valves, and push rods are all good. I'm thinking either the crankshaft bearings are going out or it might be the dampner. You can see an obvious wobble on the dampner. How do i find out which dampner to get, there are a few different to choose from. External balance and Internal balance and a couple of different weights. I would really appreciate the advice. Whatever my problem is it keeps causing my timing cover seal on the crank to keep wearing out and I am dumping oil after about a week of replacing it.