My transmission cooler lines are rusted out and starting to leak! I can't find replacements. I've patched them with 5/16 rubber fuel line, but come on... I want STEEL in MY Blazer!. LMC truck has lines for the TH350 and the TH400 but not for what I have: the TH700R4. LMC is offering me ZERO HOPE that they can supply what I need. (LMC are you listening?) Sooo... anybody have a good source for these lines? Charlie B.