I have a recent issue with a horrible shudder under load or when releasing the clutch. It has been present for the last few hundered miles and I wrote it off to hotspots on the flywheel because it only did it when letting out the clutch. It has been getting much worse lately and it even present with the clutch out and under power. Motor runs fine with no vibrations in neutral, and is worse at lower RPMs under a load. The t-case mounts are fine and engine mounts appear good. Any ideas to check out?