[GT350Mike]

The symptoms you mentioned were almost exactly like mine (the "kerchunky" is spot on) but I have zero movement in my speedo. Before I installed my adapter I pumped so much grease into it (major brain cramp), the gears were difficult to rotate. After disassembling the adapter to remove the excess grease, it rotated much easier. I think I’ve narrowed it down to either a cable/lube problem (initially, I installed the cable with white lithium grease) and/or the cable itself might be bottoming out inside the adapter which would prevent the gears to turn freely. I ran across a post on CC few nights ago the from someone who had a similar problem (I don’t think he used the word kerchunky but trust me…..its the same) and he was able to fix it by removing roughly 1/32" to 1/16” off the tip of the cable. I’ll let you know how it turns out but in the meantime, let me know if you have any other ideas.