Other than Ford, is there a company that sells a Ford speedo cable replacement for my 88 GT?? I have 2 problems with the orignal. 1 is that the needle jumps around from say 25-35 mph. I know this is common but I want it fixed. The second problem is that I cant keep the cable from leaking trans fluid from the piont where it attaches. It has a small leak and it drips down onto the exhaust. Thanks.